長期生存を認めた胸腺リンパ上皮癌の1例

Thymic Lymphoepithelial Carcinoma：Report of a Case

はじめに　胸腺リンパ上皮癌（lymphoepithelial carcinoma：LEC）は胸腺癌の亜型の一つで，まれな腫瘍である．特に早期病期に対する外科切除後の経過を示した報告は少ない．われわれは外科的切除のみで92ヵ月生存している1例を経験したため報告する．

Thymic lymphoepithelial carcinoma （LEC） is a rare subtype of thymic cancer and reported in 6％ of thymic carcinoma. In terms of histopathology, it closely mimics undifferentiated tumors that originate in the nasopharynx, and in half of the cases, it has been associated to the Epstein-Barr （EB） virus infection. Seven reports have been published on the result of surgical resection, particularly in the early stages of thymic LEC. Recurrence was reported in three patients, and one patient died. In our case, the patient underwent video-assisted thoracoscopic surgery for a partial thymectomy and thymomectomy and was alive without recurrence 92 months after the surgery without adjuvant therapy.