Abstract
We experimented a resected case of thymolipoma in an asymptomatic 24-year-old man. The patient has been pointed out a widning of the mediastinum by routine chest roentgenography when he was 11 and 20 years old, and had been diagnosed as cardiac hypertrophy. In 1993, a chest roentgenogram revealed a mass-like shadow at the mediastium, and he was admitted to the hospital with a suspected mediastinal tumor. The mass of the right anteroinferior mediastinum which was clearly shown by chest CT scan and MRI was diagnosed as mediastinal lipoma, thymoma, or thymolipoma. On July, 1993, median sternotomy was performed. The tumor, 20×7.5×3.5cm in diameter and 200g in weight, was removed together with both lobes of the thymus and mediastinal adipose tisse (extended thymectomy). Histological examination confirmed that it was thymolipoma consisting of lipomatous and thymus tissue. The postoperative course was very satisfactory and he was diwcharged as cured on 14th postoperative day. There has been no sign of reccurrence, as of 22 months after the surgery.
