1)食道

Complications and Management in Endoscopic Treatment for Esophageal Disease

要旨　内視鏡機種や処置具，その周辺機具の開発もあり，内視鏡治療の普及は目覚ましい．その適応が拡大傾向にある一方，安全性，偶発症，合併症が問題視されている．食道内視鏡検査・治療を行うにあたってはその必要性と偶発症についてインフォームド・コンセント（IC）をとる必要がある．食道は解剖学的に内腔が狭く接線方向での観察にとどまる点，さらにその存在部位が後縦隔であるがゆえの検査・治療の困難性と偶発症の重篤さがある．本稿では食道内視鏡治療における偶発症の種類と原因，予防と発生時の対策などについて述べた．

　Endoscopic devices and equipment as well as their related tools have been developed, and endoscopic treatment has gained popularity. On the other hand, complications are being encountered. Before performing endoscopic examination and treatment on the esophagus, the necessity of such a maneuver as well as the possible complications should be explained to the patients and informed consent is required. Anatomically, the lumen of the esophagus is quite narrow, thereby limiting observation of the lesion. In addition, the location of the lesion is in the posterior mediastinum and the complications occasionally become severe. This paper gives the complications of endoscopic treatment on the esophagus and their causes, prevention and treatment.