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要旨●高度の小腸腫瘤性病変を伴い,予後不良の経過をたどったMEITL(monomorphic epitheliotropic intestinal T-cell lymphoma)の2例を提示した.[症例1]60歳代,男性.体重減少と腹部膨満感を主訴に受診した.小腸X線造影検査では,空腸の全周性潰瘍性病変に加えて十二指腸から上部空腸のKerckring皺襞はびまん性に肥厚していた.上部消化管内視鏡検査では,十二指腸下行部は粗糙粘膜を呈していた.病理組織学的にMEITLと診断され,化学療法と自家幹細胞移植を行ったが8か月後に永眠された.[症例2]60歳代,女性.主訴は腹痛と発熱.小腸X線造影検査で高度に囊状拡張した上部空腸の全周性病変は,内視鏡検査では耳介様周堤を伴った全周性の潰瘍性病変として観察された.消化管穿孔により緊急手術が施行され,病理組織学的にMEITLと診断された.術後化学療法を行うも6か月後に永眠された.
We present two cases of MEITL(monomorphic epitheliotropic intestinal T-cell lymphoma)with a bulky mass resulting in poor prognosis. Case 1 involved a 60-year-old man who was referred to our institution because of weight loss and abdominal fullness. Small bowel radiography revealed thickened Kerckring folds from the duodenum to upper jejunum. Esophagogastroduodenoscopy showed coarse mucosa in the descending part of the duodenum. Following histopathological confirmation of MEITL, he underwent chemotherapy and autologous stem cell transplantation, but died of intestinal perforation eight months later. Case 2 concerned a 60-year-old woman who was referred to our institution with fever and abdominal pain. Small bowel radiography revealed a huge tumorous lesion with intraluminal aneurysmal dilatation in the upper jejunum, and single-balloon enteroscopy showed a circumferential ulcerative lesion with an auriculate ulcer mound. Emergency surgery was performed because of intestinal perforation. MEITL was histologically diagnosed, and postoperative chemotherapy was initiated ; however, she died of progressive disease after six months.
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