Abstract
A 60-year-old male visited our department because of dyspnea on exertion. During the previous seven years, he had been undergone operations, for insulinoma of the pancreas, hyperplasia of parathyroid glands and pituitary adenoma. Four years earlier he had also had an anterior mediastinum tumor resected, which was found on histo-pathologic examination to be a thymic carcinoid. Chest X-ray, CT scan and MRI on admission showed a large anterior mediastinum tumor and bulky swelling of the mediastinal lymph nodes. The brachiocephalic vein and SVC were compressed by the tumor. A bypass operation was performed to connect the lt. brachiocephalic vein to the rt. atrium to prevent SVC syndrome. One year later, he died of a pulmonary embolism after surgery for recurrent pituitary adenoma. Although it is well known that thymic carcinoid is frequently associated with endocrine disease, reports of thymic carcinoid with multiple endocrine neoplasm-type I are rare. Our experience suggests that additional mediastinal dissection is necessary for curative surgery for the thymic carcinoid.