高周波スネアにて切除した気管原発MALTリンパ腫の1例

A Case of Tracheal Mucosa-associated Lymphoid Tissue Lymphoma Successfully Treated Using a High-frequency Electrosurgical Snare

要旨　原発性気管腫瘍は稀な腫瘍であり，その多くは上皮系の腫瘍である．気管原発悪性リンパ腫の報告は非常に稀である．今回，気管原発MALTリンパ腫に対し高周波スネアを用いた内視鏡的治療を行った．症例は74歳，女性で気管腫瘍は声門直下に存在したため，挿管を回避するためにラリンジアルマスクを用い全身麻酔下に施行した．それにより内視鏡的治療時の空間を確保することが可能となり，安全に切除可能であった．長年，気管支喘息として加療されてきたが，腫瘍摘出後，自覚症状は軽快し肺機能検査も著明に改善した．

　The primary tracheal tumor is rare, and the most of the histological findings of tracheal tumor is epithelial tumor. The reports of the primary tracheal malignant lymphoma are very rare. We performed endoscopic treatment using high frequency electrosurgical snare for 74 year-old woman with primary tracheal MALT lymphoma. As the tumor was present under glottis, we selected endoscopicsurgery using laryngeal mask to evade intubation. Although she had been treated as bronchial asthma for many years, her symptom and pulmonary function test was improved remarkably after enucleation of the tumor.