Thymomas in childhood: 11 cases from a single institution

Area of Science:

• Pediatric oncology
• Thoracic surgery
• Pathology

Background:

• Thymomas are rare neoplasms originating in the thymus gland.
• Pediatric thymomas present unique clinical and pathological challenges.
• Understanding outcomes in pediatric thymoma is crucial for treatment planning.

Purpose of the Study:

• To review the clinical and pathological characteristics of pediatric thymomas.
• To evaluate treatment outcomes for children diagnosed with thymoma.
• To identify prognostic factors influencing survival in pediatric thymoma cases.

Main Methods:

• A retrospective review of 11 children diagnosed with thymoma between 1979 and 2011.
• Analysis of clinical presentation, radiological findings, surgical interventions, and adjuvant therapies (chemotherapy, radiotherapy).
• Histopathological classification into benign and invasive thymoma subtypes.

Main Results:

• The median age of diagnosis was 8 years, with a male predominance (9/2).
• Common symptoms included dyspnea, cough, chest pain, and fever. Associated conditions were noted in 3 patients.
• Benign thymomas had an excellent prognosis with no recurrence. Invasive thymomas, treated with surgery, chemotherapy, and radiotherapy, showed improved survival, though 2 patients died of disease.

Conclusions:

• Benign thymomas in children exhibit an excellent prognosis and typically do not require adjuvant treatment.
• Invasive thymomas, even with metastasis, can achieve long-term survival with multimodal therapy including surgery, chemotherapy, and radiotherapy.
• Complete surgical resection is recommended to maximize the chances of cure for pediatric thymomas.