title: Primary malignant thymoma in a 6-year-old boy.
abstract: Although not uncommon in adults, thymomas are the least common mediastinal tumors in children. The behavior of these tumors in children is partially distinct with a much more rapid course and a poor prognosis. A symptom-free 6-year-old boy was treated for malignant thymoma detected incidentally on a chest X-ray in a school mass examination. At operation, the tumor was found to have already invaded the surrounding tissue. Complete removal at the base of the invasive tumor is the treatment of choice.
mesh_terms: D002648:Child; D006801:Humans; D008297:Male; D011182:Postoperative Care; D013902:Radiography, Thoracic; D013945:Thymoma / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery*; D013953:Thymus Neoplasms / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery*