Fact-checked by Grok 2 weeks ago

Thymectomy

Thymectomy is the surgical removal of the gland, a small organ in the anterior behind the breastbone that is crucial for T-cell maturation in the . This procedure serves as a cornerstone treatment for thymic neoplasms, including thymomas (the most common anterior mediastinal tumor), thymic carcinomas, and neuroendocrine tumors, as well as non-neoplastic conditions like (MG), an autoimmune disorder often associated with thymic abnormalities. Even in the absence of tumors, thymectomy may improve MG symptoms by reducing production, though benefits can take months to years to manifest. First performed incidentally in the early and popularized in 1936 by for MG, thymectomy has evolved from open techniques to minimally invasive approaches, enhancing recovery while maintaining efficacy. Indications for thymectomy extend beyond MG and tumors to include thymic cysts, lymphomas, germ cell tumors, thymic , and occasionally ectopic parathyroid glands or other rare autoimmune disorders. Surgical techniques vary based on tumor size, location, and patient factors: the traditional provides wide access as the gold standard for complete resection, while (VATS) and robotic-assisted thymectomy offer smaller incisions, reduced blood loss, less postoperative pain, shorter hospital stays, and comparable oncologic outcomes for eligible cases. The transcervical approach is suitable for smaller, non-invasive thymomas, minimizing chest trauma. Potential complications include bleeding, phrenic or injury leading to diaphragmatic or , from damage, , and incomplete tumor resection, particularly in advanced stages. Despite these risks, minimally invasive methods have lowered overall morbidity rates compared to open . Long-term outcomes are favorable for early-stage thymomas, with five-year survival rates exceeding 90% post-resection, and thymectomy in non-thymomatous has been shown to reduce medication needs and achieve remission in many patients, as evidenced by randomized trials. However, recent studies indicate that adult thymectomy may be associated with increased long-term risks of infections, cancer, and due to impaired T-cell production.

Overview and Background

Definition and History

Thymectomy is the surgical excision of the gland, a bilobed lymphoid organ situated in the anterior of the , undertaken to address particular pathological conditions including and thymic neoplasms. The nomenclature originates from the Greek term thymos, meaning "warty excrescence" and referring to the gland due to its resemblance to thyme plant leaves, combined with ectomy, signifying surgical removal. This procedure targets the 's role in immune function, particularly T-cell maturation, though its removal is generally well-tolerated in adults. The earliest documented thymectomies occurred incidentally in the early , performed by surgeons and during thyroidectomies for , where the was removed en bloc without specific intent. advanced the approach with the first deliberate transcervical thymectomy in 1911 on a 19-year-old exhibiting thyrotoxicosis and myasthenia gravis-like symptoms, with the initially showing improvement and highlighting early experimental risks. These initial cases laid groundwork but did not immediately establish thymectomy as a routine intervention. Thymectomy gained prominence in 1936 through at , who performed the procedure on a patient with and noted marked symptom remission, prompting its adoption as a therapeutic option for the autoimmune disorder. By the 1940s, Blalock and colleagues reported favorable results in a series of 20 cases, solidifying its role primarily for this condition before broader application to thymic tumors emerged. A pivotal modern validation came from the Myasthenia Gravis Thymectomy Trial (MGTX), a multicenter randomized study published in 2016, which confirmed that thymectomy plus yielded superior three-year outcomes— including reduced medication requirements and fewer hospitalizations—compared to monotherapy in patients with nonthymomatous .

Thymus Anatomy and Physiology

The is a bilobed, encapsulated lymphoid organ located in the anterior superior , positioned posterior to the and extending superiorly from the level of the via the thyrothymic to the fourth inferiorly. It consists of two lobes divided by a , each subdivided into lobules featuring a densely cellular outer and a lighter-staining inner medulla, with epithelial cells, thymocytes, and dendritic cells forming its microenvironment. The organ reaches its peak size at , weighing approximately 30–40 grams, before undergoing progressive in adulthood, where functional lymphoid tissue is largely replaced by adipose and , reducing its mass significantly. The thymus receives its arterial blood supply primarily from branches of the internal thoracic arteries and the inferior arteries, with additional contributions possible from the pericardiophrenic or anterior ; venous drainage occurs via the left brachiocephalic and internal thoracic veins. Innervation is provided by sympathetic fibers from the superior and stellate ganglia, parasympathetic input from the , and branches from the , which collectively influence vascular tone and possibly modulate thymic cellular activity. Ectopic thymic tissue, arising from aberrant embryonic migration, may occur in the ( thymus) or additional mediastinal sites, potentially comprising up to 20% of thymic remnants in some individuals. As a primary lymphoid organ, the thymus plays a central role in adaptive immunity by facilitating the maturation of T lymphocytes from marrow-derived precursors that migrate to the as thymocytes. Within the , positive selection ensures survival of thymocytes capable of recognizing self-major (MHC) molecules, eliminating approximately 95% of cells that fail this criterion, while negative selection in the medulla deletes strongly self-reactive clones to establish central and prevent . The also secretes hormones such as alpha-1, which promotes T-cell differentiation and enhances immune function, particularly during neonatal and childhood development when the is most active. Post-puberty diminishes its hematopoietic output, rendering it less essential for ongoing T-cell production in adults, though residual functions persist in maintaining peripheral T-cell .

Indications

Thymic Tumors

Thymic tumors encompass a range of neoplasms originating from the gland, with being the most prevalent type, accounting for approximately 50% of all anterior mediastinal masses. are epithelial tumors classified by the (WHO) into subtypes A, AB, B1, B2, and B3 based on histologic features such as the proportion of lymphocytes to epithelial cells and the degree of ; these subtypes reflect varying malignant potential, with type A and AB generally showing indolent behavior, while B3 exhibits more aggressive characteristics. Thymic , a rarer and distinct entity from , arises from malignant epithelial cells with significant cytologic and is characterized by its aggressive nature and poor prognosis, often presenting with local or distant at diagnosis. Thymic neuroendocrine tumors, previously termed carcinoids, represent another uncommon subset, comprising less than 5% of thymic neoplasms and exhibiting neuroendocrine differentiation with potential for aggressive behavior similar to their pulmonary counterparts. Thymectomy serves as the cornerstone of treatment for thymic tumors, particularly for achieving complete surgical resection, which is the primary goal in early-stage disease to optimize outcomes. For stage I-III thymomas according to the Masaoka-Koga staging system—which defines stage I as a fully encapsulated tumor without invasion, stage II as microscopic invasion of the capsule or mediastinal fat, stage III as macroscopic invasion of adjacent organs, and stage IV as pleural or pericardial dissemination or distant metastasis—thymectomy is indicated to remove the tumor along with surrounding thymic tissue and fat for curative intent. In advanced stages (III-IV), neoadjuvant or chemoradiotherapy is often employed prior to thymectomy to downsize the tumor and facilitate resectability, particularly when imaging reveals invasion of contiguous structures. Preoperative evaluation of suspected thymic masses typically involves computed tomography (CT), (MRI), or positron emission tomography-CT (PET-CT), which demonstrate characteristic heterogeneous enhancement, fat plane disruption, or metabolic activity indicative of malignancy. Key clinical associations and prognostic factors underscore the rationale for thymectomy in these tumors. Approximately 30-50% of thymomas are linked to paraneoplastic syndromes, most notably , highlighting the immunologic interplay between thymic neoplasia and . Prognosis varies markedly by stage and ; for instance, 5-year overall survival for stage I thymomas approaches 90%, reflecting excellent outcomes with complete resection, whereas it declines to around 30-50% for stage IV disease due to metastatic spread and therapeutic challenges. Thymic carcinomas and neuroendocrine tumors generally portend worse survival, with 5-year rates often below 50% even after multimodality therapy, emphasizing the need for aggressive surgical intervention when feasible.

Myasthenia Gravis and Other Conditions

Myasthenia gravis (MG) is an autoimmune neuromuscular disorder characterized by the production of autoantibodies against s at the , leading to and . Thymic abnormalities are present in approximately 80% of patients with antibody-positive MG, with thymic occurring in about 70% of non-thymomatous cases and in 10-15%. These thymic changes are thought to contribute to the autoimmune dysregulation, prompting thymectomy as a therapeutic intervention even in the absence of neoplasia. Thymectomy is recommended for patients with generalized non-thymomatous AChR antibody-positive , particularly those aged 18-65 years, as it increases the likelihood of remission or improvement when combined with medical therapy. The landmark MGTX demonstrated that extended transsternal thymectomy plus resulted in a higher rate of minimal-manifestation status (67%) at 3 years compared to alone (47%), along with greater improvement in Quantitative Myasthenia Gravis scores and lower cumulative doses. Benefits are most pronounced in younger patients and those with disease, supporting thymectomy as a standard option for non-thymomatous generalized . Beyond , thymectomy serves as a treatment for isolated thymic hyperplasia in select autoimmune contexts, though this is less common without concurrent . It is also indicated for ectopic mediastinal parathyroid adenomas causing , where the thymus harbors the abnormal tissue, often approached via minimally invasive techniques to achieve biochemical cure. Additionally, thymectomy addresses paraneoplastic associations such as pure red cell aplasia, seen in up to 5% of cases but responsive to surgical removal even in non-thymomatous scenarios.

Surgical Approaches

Open Thymectomy

Open thymectomy, also known as traditional thymectomy via , serves as the standard surgical approach for thymus removal, particularly in cases requiring extensive access to the anterior . The procedure begins with a midline vertical incision extending from the sternal notch to the , followed by a median split of the using an oscillating saw to provide full exposure of the mediastinal structures. This allows clear visualization of the gland, bilateral phrenic nerves, , and surrounding tissues, facilitating meticulous and complete removal of the along with its capsule and adjacent mediastinal fat to minimize the risk of residual ectopic thymic tissue. In extended thymectomy, a variant commonly employed for (MG), the resection encompasses not only the but also the surrounding mediastinal fat and the fat pads at the pericardiophrenic angles to achieve maximal clearance of potential thymic remnants, which is critical for therapeutic efficacy in autoimmune conditions. The operation typically lasts 2 to 4 hours under general with double-lumen endotracheal to enable single-lung ventilation and optimal surgical field control. This approach is particularly preferred for large or invasive thymic tumors, such as those classified as , where complete en bloc resection is essential for oncologic outcomes. While it is associated with higher intraoperative blood loss, typically ranging from 100 to 500 mL depending on tumor size and vascular involvement, open thymectomy achieves complete resection rates exceeding 95% in experienced centers, surpassing minimally invasive alternatives in complex cases.

Minimally Invasive Thymectomy

Minimally invasive thymectomy encompasses endoscopic and robotic techniques designed to remove the gland with reduced surgical trauma, shorter recovery times, and lower morbidity compared to traditional open approaches, particularly in patients with early-stage thymomas or non-thymomatous (MG). These methods leverage small incisions and specialized instruments to access the anterior , prioritizing precision dissection while minimizing disruption to surrounding structures like the phrenic nerves and . Introduced in the early 1990s, such techniques have evolved to offer hospital stays typically of 2-4 days, compared to 3-6 days for open procedures, and demonstrate equivalent oncologic outcomes for stage I-II thymomas based on recent systematic reviews. Video-assisted thoracoscopic surgery (VATS) represents a foundational minimally invasive approach, typically performed via a unilateral right or left thoracic incision depending on thymic location and tumor laterality. The patient is positioned in a 30-degree semi-supine stance with the ipsilateral arm abducted to optimize access, allowing insertion of 3-4 trocars ranging from 5-10 mm in size. A 30-degree thoracoscope is introduced through the lateral port for visualization, while dissection proceeds using tools such as the harmonic scalpel for hemostasis and tissue division, and an endostapler for vascular control. This method is particularly suitable for stage I-II thymomas or non-thymomatous MG, enabling complete thymic resection with limited invasion and reduced postoperative pain. Robotic-assisted thymectomy builds on VATS principles using the Da Vinci system, which employs 4 ports for enhanced maneuverability and three-dimensional visualization, facilitating intricate dissection in the confined mediastinal space. The system's articulated instruments provide superior dexterity over conventional , allowing precise handling of mediastinal fat and ectopic thymic tissue. Setup time typically ranges from 10-25 minutes, with total operative durations of 1-3 hours, including console time for the surgeon. Like VATS, it is ideal for early-stage disease and , yielding comparable remission rates and fewer complications than open surgery. Other variants include transcervical thymectomy, accessed via a 5 cm supraclavicular incision to target the upper thymic poles, often video-assisted to avoid thoracic entry and chest tube placement, resulting in minimal pain and rapid recovery. Hybrid approaches combine elements such as unilateral with subxiphoid access, enhancing of bilateral structures while maintaining low invasiveness for selected cases. These techniques collectively reduce blood loss and complications, supporting their adoption for suitable patients with preserved long-term efficacy.

Perioperative Care

Preoperative Preparation

Preoperative preparation for thymectomy involves a comprehensive multidisciplinary to optimize patient outcomes and minimize risks, typically coordinated by a team including a thoracic surgeon, neurologist (particularly for cases), and anesthesiologist experienced in neuromuscular disorders. This assessment ensures disease stability, identifies comorbidities, and plans the surgical approach, with obtained after discussing options such as open or minimally invasive techniques and potential risks. Diagnostic imaging is essential to delineate thymic and guide surgical planning. Computed (CT) of the chest serves as the primary modality, providing detailed assessment of tumor size, location, invasion into adjacent structures like the or vessels, and overall resectability. (MRI) may be employed when neural involvement or vascular encasement is suspected, offering superior soft-tissue contrast for evaluating mediastinal extension. Positron emission -computed (PET-CT) is indicated for in cases of suspected or to differentiate malignant from benign lesions, though its routine use is reserved for advanced disease. , typically via CT-guided needle aspiration, is performed selectively for tumors of questionable operability or when is uncertain, avoiding it in early-stage lesions to prevent potential . For patients with , preoperative optimization focuses on achieving symptom stability to reduce respiratory complications. Anticholinesterase medications like are continued for mild cases, but patients with significant bulbar or respiratory weakness undergo or intravenous immunoglobulin (IVIG) 1-2 weeks prior to enhance neuromuscular function. Emerging therapies like efgartigimod, an intravenous FcRn inhibitor, have shown promise in a 2025 phase II trial for improving neuromuscular function and reducing myasthenic crisis risk in thymoma-associated patients prior to thymectomy. Pulmonary function tests, including forced (FVC), are mandatory to assess respiratory reserve; FVC <50% predicted indicates severe impairment and increased risk of postoperative respiratory complications, often requiring additional optimization before proceeding with surgery. Moderate impairment is defined as 50-64% predicted. General preoperative measures include cardiac evaluation via to assess for pericardial involvement or concomitant autoimmune cardiac conditions, alongside a full assessment tailored to neuromuscular risks. Prophylactic antibiotics, such as cephalosporins, are administered to cover respiratory pathogens and prevent surgical site infections. Patients adhere to guidelines, typically nil per os () for solids for 6-8 hours and clear fluids up to 2 hours preoperatively, to mitigate risk under general .

Postoperative Management

Following thymectomy, patients are typically monitored in a recovery room or step-down unit, with high-risk individuals, such as those with (MG) at risk of exacerbation, admitted to the (ICU) for close observation of respiratory function and neuromuscular status. , including , , and , are continuously assessed, often with monitoring in complex cases. Chest tubes are routinely placed during to drain pleural fluid and air, with removal occurring once output is less than 100-150 mL per day for 24 hours and no air leak is present, typically within 1-3 days. Pain management is achieved through multimodal approaches, including (PCA) with opioids for moderate pain or thoracic epidural analgesia with low-dose local anesthetics like bupivacaine or , which provides superior relief and facilitates earlier extubation in MG patients. Prophylactic antibiotics, such as , are administered for 24-48 hours postoperatively to prevent surgical site infections, in line with guidelines for thoracic procedures. Venous thromboembolism prophylaxis with , such as enoxaparin, is initiated within 24 hours unless contraindicated, given the elevated risk in thymectomy patients. Respiratory support emphasizes prevention of and through incentive every 1-2 hours while awake, combined with early mobilization starting on postoperative day 1 to enhance expansion and circulation. In MG patients, extubation is guided by quantitative (train-of-four ratio >0.9) and exceeding 20-25 mL/kg; delayed weaning or may be required if a myasthenic develops. Nutrition is resumed orally with clear liquids on postoperative day 1, advancing as tolerated, though a nasogastric tube may be used temporarily if or severe occurs. Pathology review of the resected is performed promptly to assess margins and , particularly for thymic tumors, informing any needs. Discharge criteria include stable , adequate pain control with oral medications, independent ambulation, and removal of all drains, typically achieved in 3-7 days depending on the surgical approach—shorter for minimally invasive techniques.

Complications and Outcomes

Surgical Complications

Thymectomy, while generally safe, carries risks of intraoperative and postoperative complications, with low morbidity and mortality rates that vary by surgical approach. Intraoperative complications primarily involve vascular and neural structures due to the thymus's mediastinal location. is a notable risk, often from to the innominate or thymic vessels, with an incidence of 1% to 5%; severe cases may necessitate to open surgery or immediate . , leading to diaphragmatic and potential respiratory compromise, occurs in 2% to 10% of procedures and can result from direct , thermal , or excessive retraction during . Cardiac , such as , is less common but arises from proximity to the heart during mobilization. Postoperative complications include infectious and lymphatic issues. Wound or mediastinal affect fewer than 5% of patients and are managed with antibiotics and as needed. , resulting from leakage, has an incidence of 1% to 2% and typically presents as milky ; conservative management involves , , and , with surgical ligation reserved for persistent high-output cases. palsy, causing hoarseness, occurs in about 1% of cases due to traction or direct injury. Complication profiles vary by surgical approach. Open thymectomy is associated with a higher risk (approximately 5%) compared to (VATS) at around 2%, attributable to greater postoperative pain and reduced pulmonary function. In patients with , myasthenic crisis—manifesting as severe requiring ventilatory support—develops in 5% to 10% postoperatively, often mitigated by preoperative optimization.

Long-term Effects and Immune Impact

Thymectomy in adults typically results in minimal T-cell deficiency due to the natural of the after , which reduces its active role in T-cell production. However, recent studies indicate that thymic removal can still impair immune , leading to reduced naive T-cell output and decreased T-cell receptor repertoire diversity. A 2023 analysis of over 1,100 thymectomy patients found significantly lower signal joint T-cell receptor excision DNA circles (sjTRECs) in CD4+ and CD8+ T cells compared to controls, suggesting diminished thymic emigrants. This contributes to premature , characterized by accelerated aging of the T-cell compartment. Long-term immune dysregulation post-thymectomy includes elevated risks of autoimmunity, cancer, and mortality. A landmark study reported a 1.5-fold increased relative risk of new-onset autoimmune diseases (excluding preoperative cases), alongside a hazard ratio of 1.6 for cancer incidence over 20 years. All-cause mortality was 2.9 times higher at 5 years (8.1% vs. 2.8% in controls), persisting as a 1.5-fold hazard over two decades. Thymic loss may also reduce regulatory T-cell populations, promoting chronic inflammation through upregulated proinflammatory cytokine clusters. In congenital cases, such as those involving early thymectomy during cardiac surgery, patients face higher infection rates, including increased hospitalizations for pneumonia and wheezing, due to persistent T-cell lymphopenia and impaired repertoire diversity. Clinical outcomes vary by indication. In (MG), thymectomy yields long-term benefits, with 21% achieving complete remission and 54% marked improvement, for an overall benefit in 75% of patients at extended follow-up. For , recurrence rates are low in early stages, at 6.1% for stage I and 11.4% for stage II after resection, necessitating annual computed tomography surveillance. A 2024 review in affirmed these elevated cancer and autoimmune risks but concluded that for and , thymectomy's benefits—such as improved symptom control and tumor eradication—outweigh the immune drawbacks, aligning with clinical guidelines. A 2025 study further supports that the benefits outweigh potential risks in these indications.

References

  1. [1]
    Thymectomy - StatPearls - NCBI Bookshelf
    Jan 19, 2025 · Thymectomy is a surgical procedure involving the removal of the thymus gland, commonly performed for conditions such as thymoma, myasthenia gravis, and other ...Continuing Education Activity · Introduction · Indications · Technique or Treatment
  2. [2]
    Myasthenia gravis - Diagnosis and treatment - Mayo Clinic
    Aug 22, 2025 · If you have a thymoma, you'll likely need surgery to remove the thymus gland. The surgery is called thymectomy. Even if you don't have a tumor ...
  3. [3]
    The evolution of thymic surgery through the years in art and history
    Apr 20, 2018 · Ernst Ferdinand Sauerbruch (1875–1951) in 1911 performed the first transcervical total thymectomy for thyrotoxicosis in a 19-year-old adult ...Missing: Garre | Show results with:Garre
  4. [4]
    [The history of thymus surgery] - PubMed
    After F. Sauerbruch's thymectomy in a patient with myasthenia gravis syndrome (MG), A. Blalock established thymectomy in the 1940s for the treatment of MG.
  5. [5]
    Randomized Trial of Thymectomy in Myasthenia Gravis
    Aug 11, 2016 · Thymectomy improved clinical outcomes over a 3-year period in patients with nonthymomatous myasthenia gravis.
  6. [6]
    Anatomy, Head and Neck, Thymus - StatPearls - NCBI Bookshelf - NIH
    Jun 23, 2025 · The thymus is a primary lymphoid organ situated in the superior mediastinum. Largest during early life, the thymus gradually decreases in size after puberty.
  7. [7]
    Thymic lesions of the paediatric age group - NIH
    Jun 13, 2019 · It reaches a maximum weight of 30–40 g during puberty and then undergoes involution but does not disappear completely.
  8. [8]
    Autonomic nervous system innervation of thymic-related lymphoid ...
    The thymus was innervated by AChE-positive fibers of the vagus, the recurrent laryngeal, and the phrenic nerves. Catecholaminergic innervation was derived from ...
  9. [9]
    Cervical thymus | Radiology Reference Article - Radiopaedia.org
    Aug 1, 2018 · The cervical thymus (plural: cervical thymi) refers to an ectopic location of the thymus in the neck above the level of the brachiocephalic veins.<|separator|>
  10. [10]
    A guide to thymic selection of T cells - PubMed
    Jul 18, 2023 · Thymic selection ensures that the repertoire of available T cells is both useful (being MHC-restricted) and safe (being self-tolerant). The ...
  11. [11]
    Thymosin alpha 1: A comprehensive review of the literature - PMC
    Thymosin alpha 1 is a peptide naturally occurring in the thymus that has long been recognized for modifying, enhancing, and restoring immune function.
  12. [12]
    A Review of Thymic Tumors - PMC - PubMed Central - NIH
    Thymic tumors are most common tumors of the anterior mediastinum accounting for 20 % of all mediastinal tumors and 50 % of all anterior mediastinal tumors.
  13. [13]
    The 2015 WHO Classification of Tumors of the Thymus
    Type B1 and B2 thymomas are, by definition, both lymphocyte-rich tumors. To improve their distinction from one another, which can be difficult, the thymus-like ...
  14. [14]
    Treatment of Advanced Thymoma and Thymic Carcinoma - PMC - NIH
    Thymic carcinomas are rare, but are highly aggressive tumors that are associated with a poor prognosis. The mainstay of therapy is complete surgical resection.
  15. [15]
    Primary neuroendocrine carcinoma of the thymus - PubMed Central
    Primary neuroendocrine tumors of the thymus, previously known as carcinoid tumors of the thymus, are unusual tumors that account for less than 5% of all ...
  16. [16]
    Classification and staging of thymoma - PMC - PubMed Central - NIH
    A tumor is classified with the highest attributable T level, regardless of whether there is an involvement of structures with lower T levels (10). Surgical ...
  17. [17]
    Locally advanced thymoma; does neoadjuvant chemotherapy ... - NIH
    Aug 18, 2023 · In locally advanced and borderline resectable tumors, neoadjuvant chemotherapy (NACT) may be utilized to increase the chance of R0 resection, ...
  18. [18]
    Imaging Evaluation of Thymoma and Thymic Carcinoma - PMC - NIH
    Jan 3, 2022 · A variety of CT, MRI, and PET/CT characteristics can help differentiate thymoma and thymic carcinoma, with new CT and MRI techniques currently under evaluation ...Missing: suspected | Show results with:suspected
  19. [19]
    Myasthenia gravis as a prognostic marker in patients with thymoma
    MG is present in 30–50% of patients with thymoma, while 10–20% of patients with MG have thymoma (although some report an association as high as 80%) (2,5,8).
  20. [20]
    Clinical features and prognostic factors in thymoma and thymic ... - NIH
    May 14, 2024 · Thymomas are usually slow-growing tumors, whereas thymic carcinomas are more aggressive and associated with a worse prognosis.
  21. [21]
    Thymic Hyperplasia - StatPearls - NCBI Bookshelf - NIH
    Aug 7, 2023 · Thymus achieves its peak size around puberty and then atrophies slowly. Thymic hyperplasia is not always pathological, but the growth of the ...<|separator|>
  22. [22]
    Thymic hyperplasia in myasthenia gravis: a narrative review - PMC
    Jun 25, 2025 · Approximately 10–30% of MG patients have thymoma associated MG, typically occurring in men over the age of 50 years, although both genders age ...
  23. [23]
    Thymectomy for myasthenia gravis (practice parameter update)
    Mar 25, 2020 · To review updated evidence regarding the effectiveness of thymectomy for treating patients with myasthenia gravis (MG).
  24. [24]
    Robot-assisted complete thymectomy for mediastinal ectopic ...
    Oct 22, 2016 · An ectopic parathyroid adenoma was successfully removed in all five cases, with intraoperative iOPTH decreasing ~50 % from baseline after 10 ...
  25. [25]
    Thymoma and pure red cell aplasia: A single institution experience.
    Jun 2, 2022 · Thymoma is an uncommon malignancy often associated with paraneoplastic syndromes including pure red cell aplasia (PRCA), occurring in up to 5% of patients with ...<|control11|><|separator|>
  26. [26]
    Thymoma with pure red cell aplasia and Good's syndrome - PubMed
    Thymoma patients with pure red cell aplasia (PRCA) or hypogammaglobulinemia (Good's syndrome) are rare, whereas those with both PRCA and Good's syndrome are ...Missing: indications | Show results with:indications
  27. [27]
    Surgical approaches for thymectomy: a narrative review - PMC
    Mar 6, 2025 · Thymectomy continues to be a standard treatment strategy for patients with thymic neoplasms and myasthenia gravis.
  28. [28]
    Examination on the necessity of pericardial fat tissue resection ... - NIH
    Extended thymectomy with pericardial fat tissue resection has been a mainstay in the treatment for myasthenia gravies (MG), but few studies have examined ...
  29. [29]
    Evaluation of extended thymectomy approaches based on residual ...
    Nov 24, 2020 · In this study, we defined the area for extended thymectomy as the pericardial fat tissue around the thymus at the lower edge of the cardiac ...
  30. [30]
    Minimally invasive thymectomy for thymoma: does surgical ... - NIH
    Dec 3, 2016 · Complete (R0) surgical resection remains the primary treatment modality for thymoma in both early and advanced stage disease.
  31. [31]
    Minimally invasive versus open thymectomy: a systematic review of ...
    Jan 1, 2016 · In appropriately selected patients, MIT may reduce blood loss, chest tube duration, and hospital length of stay, with comparable clinical ...
  32. [32]
    Surgical management of thymic tumors: a narrative review with ... - NIH
    Nov 7, 2024 · However, especially for extended tumors with the need for extended resection and reconstruction, open thymectomy remains a valuable approach.
  33. [33]
    The clinical significance of open vs. minimally invasive surgical ...
    Dec 11, 2024 · In this review article, we will compare the efficacy and implications of the different surgical approaches and techniques themselves in performing a thymectomy.
  34. [34]
    Minimally invasive versus open thymectomy: a systematic review of ...
    Jan 1, 2016 · Minimally invasive versus open thymectomy: a systematic review of surgical techniques, patient demographics, and perioperative outcomes.Results · Thymoma Size And Staging · Perioperative And...Missing: hybrid | Show results with:hybrid<|separator|>
  35. [35]
    Surgical approaches for thymectomy: a narrative review
    Aug 6, 2025 · Minimally invasive thymectomy was introduced in the 1990s with the aim of reducing surgical trauma, facilitating faster postoperative recovery, ...<|separator|>
  36. [36]
    Minimally invasive versus open thymectomy for thymic malignancies
    MIS patients had significantly less blood loss, but no significant difference in operating time, respiratory complications, cardiac complications, or overall ...Missing: IV | Show results with:IV
  37. [37]
    Video Assisted Thoracoscopic (VATS) Thymectomy - CTSNet
    Oct 24, 2013 · Operative Procedure. The patient is positioned in a 30 degree semi-supine position with a roll placed under the shoulder, and the ipsilateral ...Missing: details | Show results with:details
  38. [38]
    Video-assisted thoracoscopic thymectomy using 5-mm ports ... - NIH
    Jan 2, 2016 · This is a detailed description of video-assisted thoracoscopic thymectomy using three 5 mm ports, carbon dioxide (CO2) insufflation and bipolar ...Missing: 10mm scalpel
  39. [39]
    Improved procedures and comparative results for video-assisted ...
    VATS-ET is suitable for select patients with MG with or without a thymoma. In addition, our current method has shown to be effective while also offering ...Missing: technique | Show results with:technique
  40. [40]
    Robotic thymectomy: a review of techniques and results - PubMed
    A minimally invasive approach to thymectomy is associated with improved surgical results and fewer complications in surgery compared to transsternal open ...Missing: 2024 | Show results with:2024
  41. [41]
    Robotic-assisted laparoscopic and thoracoscopic surgery ... - PubMed
    Results: The median set up time for all procedures was reduced from 25.0 to 10.4 minutes. Conversion to traditional laparoscopy or thoracoscopy occurred in 12 ...Missing: operative | Show results with:operative<|separator|>
  42. [42]
    Perioperative management of myasthenia gravis - PMC
    Aug 19, 2021 · Preoperative assessment should involve the patients' neurologist to ensure that their condition is optimised and in a stable phase, and to plan ...
  43. [43]
  44. [44]
    [Indications for thymectomy] - PubMed
    An absolute indication for thymectomy exists in all cases with tumors of the thymus gland, however, preoperative differentiation between benign and ...Missing: thymic | Show results with:thymic
  45. [45]
  46. [46]
    Concurrent thymic carcinoma and middle lobe syndrome - PMC - NIH
    Similar to antimicrobial prophylaxis in other thoracic surgeries, antibiotics such as cephalosporins and clindamycin, which cover common respiratory pathogens, ...Missing: assessment | Show results with:assessment
  47. [47]
    [PDF] Enhanced Recovery after Thoracic Surgery - SCTS
    Preoperative fasting: • Clear fluids are allowed until 2 hours (and solids ... biopsy, thymectomy) to promote 24-hour discharge. 2. No urinary catheter ...
  48. [48]
    What To Expect During Thymectomy | University of Utah Health
    You stay in the hospital overnight after a thymectomy. If you have myasthenia gravis, you may stay in the intensive care unit (ICU) to ensure there are no ...Missing: guidelines | Show results with:guidelines
  49. [49]
  50. [50]
    Thymectomy: What To Expect - Cleveland Clinic
    Pain after a thymectomy is often mild and the recovery is quick. However, it can take a year or more for people with myasthenia gravis to see results.
  51. [51]
    Thymectomy/Mediastinal Mass | Hospitals in New Jersey
    What to Expect After Thymectomy Procedure · Your recovery process will vary depending on the type of procedure done. · The breathing tube is removed when you wake ...
  52. [52]
    Postoperative Antibacterial Prophylaxis for the Prevention of ...
    Aug 10, 2025 · Objective To determine whether extended postoperative antibacterial prophylaxis for patients undergoing elective thoracic surgery with tube ...Missing: thymectomy | Show results with:thymectomy
  53. [53]
    Venous thromboembolism prophylaxis after minimally-invasive ... - NIH
    Current international guidelines recommend DVT prophylaxis in the immediate postoperative period after general, orthopedic and thoracic surgery. In these ...Missing: thymectomy antibiotics
  54. [54]
    Venous thromboembolism after adult thymus or thymic tumor resection
    We found that VTE occurred frequently in patients after thymectomy without VTE prophylaxis, and the median sternotomy procedure and malignant tumor may be the ...Missing: tube | Show results with:tube
  55. [55]
    [PDF] AARC Clinical Practice Guideline
    14.2 It is recommended that incentive spirometry be used with deep breathing techniques, directed cough- ing, early mobilization, and optimal analgesia to pre- ...Missing: thymectomy | Show results with:thymectomy
  56. [56]
    Is Incentive Spirometry Superior to Standard Care in Postoperative ...
    Apr 15, 2024 · The aim of this review was to evaluate whether IS is superior to respiratory care, mobilization exercises, and noninvasive ventilation on PPC, and clinical ...Missing: thymectomy | Show results with:thymectomy
  57. [57]
    A systematic review of robotic versus open and video assisted ... - NIH
    Median sternotomy has been the most commonly used approach for thymectomy to date. Recent advances in video-assisted thoracoscopic surgery (VATS) and ...Quantity Of Evidence · Table 1. Study... · Figure 2
  58. [58]
    Intraoperative complications during robotic thymectomy and their ...
    Jun 30, 2025 · It is met with a low complication rate that is not increased compared to the open approach. Common complications include injury to nearby ...
  59. [59]
    Perioperative complications of the right multiport thoracoscopic ...
    Jul 5, 2025 · Complications that may be associated with multiport VATS thymectomy could sometimes be highly serious, such as bleeding and myasthenic crisis.Missing: chylothorax | Show results with:chylothorax
  60. [60]
    Bilateral chylothorax after transsternal total thymectomy
    The incidence of postoperative chylothorax is reported to range from 0.5% to ... management was conservative including fasting and total parenteral nutrition.
  61. [61]
    [PDF] Thoracoscopic versus Open Approach in Thymectomy
    Jul 7, 2025 · Our study also demonstrated a statistically significant lower risk of sequelae, such as wound and chest infection, with VATS thymectomy compared ...
  62. [62]
    Risk factors of myasthenia crisis after thymectomy among... - Medicine
    It was reported that MG patients with a record of MC may experience crisis recurrence, and the relapse rate ranges from 30% to 50%. In addition, receiving ...
  63. [63]
    Health Consequences of Thymus Removal in Adults
    Aug 2, 2023 · In this study, all-cause mortality and the risk of cancer were higher among patients who had undergone thymectomy than among controls.
  64. [64]
    Does Surgical Removal of the Thymus Have Deleterious ...
    May 23, 2024 · Subsequent studies with long-term follow-up confirmed favorable outcomes after thymectomy for patients with MG, including children.
  65. [65]
  66. [66]
    Early Thymectomy Is Associated With Long-Term Impairment of the ...
    Early thymectomy, either partial or complete, may be associated with a reduction in many T cell subpopulations and TCR diversity, and these alterations may ...<|separator|>
  67. [67]
    Pneumonia, wheezing and asthma were more common in children ...
    Mar 19, 2024 · This nationwide study showed that pneumonia, wheezing and asthma were more common in children who had undergone thymectomy due to open-heart ...
  68. [68]
  69. [69]
    Predictors of Recurrence after Thymoma Resection - PMC - NIH
    The recurrence rate according to Masaoka stage was 6.1% (8/132), 11.4% (13/114), 26.8% (11/41) and 50.0% (9/18) for stages I, II, III and IV, respectively.