胸痛を契機に発見され広範な壊死を認めた胸腺腫の1例

Thymoma with Extensive Necrosis：Report of a Case

はじめに　胸腺腫は4％の症例で壊死や出血，囊胞変性を認めるといわれている1）が，広範囲の壊死を伴う胸腺腫はまれである．われわれは発熱と胸痛を契機に発見され，広範な壊死を伴った胸腺腫の1手術例を経験したので，文献的考察を加えて報告する．

A 65-years-old female was admitted to our hospital for treatment of fever and chest pain. Contrast-enhanced computed tomography （CT） revealed an anterior mediastinal tumor with a thickened wall, and right pleural effusion. Ten days after antibiotic therapy, the fever, chest pain and pleural effusion disappeared. Thymectomy was performed to confirm the diagnosis. Histopathologic diagnosis was type B2 thymoma with extensive necrotic area, Masaoka’s stageⅠ. No recurrence has been observed for approximately two years since the surgery. Thymomas have a variety of pathological features such as cystic and hemorrhagic changes and necrosis. However, thymomas with extensive necrosis are very rare. We presented this case with a review of the literature.