A CASE OF THYMOLIPOMA ASSOCIATED WITH INTRATHORACIC GOITER

A 45-year-old woman was seen at the hospital because of an antetior neck nodule pointed out at a recent medical checkup. The nodule was diagnosed as intrathoracic goiter by neck CT and MRI. She was also pointed out an abnormal shadow on a chest X-ray film. Chest CT demonstrated a huge lipodensity mass pressing the right middle lobe of the lung in the anterioinferior mediastinum. The clinical diagnosis was lipoma or thymolipoma arising from the mediastinum. Right lobectomy including intrathoracic part of the thyroid and an extirpation of the huge mediastinal tumor were performed. Histologically, the specimen of anterior neck tumor (256g) was adenomatous goiter and the specimen of the huge tumor (2000g) of the mediastinum was thymolipoma. Thymolipoma associated with intrathoracic goiter is very rare and this is the first case report as far as we could review.