縦隔囊胞に対するエタノール注入療法

Ethanol Instillation for Mediastinal Cyst

縦隔囊胞は従来，術前診断で悪性の否定が困難であることから，診断的治療として摘出術が一般に行われてきた．われわれは縦隔囊胞の増大により周囲臓器の圧迫症状をきたした症例に対して，侵襲の少ないエタノール注入療法を行い，良好な治療経過を得たので報告する．

Mediastinal cyst rarely becomes symptomatic due to compression of adjacent organs. In such case, treatment has to be considered. Either surgical extirpation or percutaneous decompression is the treatment of choice. A 53 years old woman who had been diagnosed with intractable epilepsy, mental retardation and Chilaiditi syndrome was admitted to our hospital because of dyspnea and difficulty in conversation. Chest computed tomography （CT） revealed a mediastinal cystic lesion which expanded to the right chest cavity and occupied most of the right chest cavity. That cyst was treated by percutaneous aspiration and ethanol instillation successfully. Ethanol instillation for the symptomatic mediastinal cyst is the treatment of choice in case the surgery is not feasible.