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要旨●患者は60歳代,男性.血便にて大腸内視鏡検査を施行したところ,下部直腸(Rb)に2型直腸癌,回盲部に境界明瞭な打ち抜き様潰瘍を認めた.Behçet症状は認めなかった.初回から7,11か月後の下部消化管内視鏡検査では潰瘍は増大傾向を示し,12か月後に回盲弁の潰瘍から活動性出血を認めたため,緊急腹腔鏡下回盲部切除術を施行した.病理組織学的に下掘れ傾向のある潰瘍で,リンパ球性静脈炎を伴っていた.臨床所見と合わせて単純性潰瘍と診断した.
A man in his 60s presented to our hospital with a chief complaint of bloody stool. Colonoscopy revealed rectal cancer and punched-out ulcers with well-defined borders in the ileocecal region. No symptoms suggestive of Behçet's disease were observed. Follow-up lower gastrointestinal endoscopy at 7 and 11 months after the initial examination showed progressive enlargement of the ulcers. Twelve months later, active bleeding was observed from an ulcer at the ileocecal valve, necessitating emergency laparoscopic ileocecal resection. Histopathological examination revealed a deep, downward-extending ulcer associated with lymphocytic phlebitis. Based on these clinical and pathological findings, the lesion was diagnosed as a simple ulcer.

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