膀胱に発生した炎症性偽腫瘍

Inflammatory myofibroblastic tumor of the bladder：A case report

症例は44歳女性。排尿時痛および微熱が続き，抗生剤治療されるも軽快せず，他院より紹介受診。膀胱鏡検査で膀胱頂部に非乳頭状隆起性病変を認め，画像所見で囊胞性腫瘍であったため，排膿と生検を兼ねて，TUR-Btを施行した。術後，輸血を要するほどの出血を認めたため，膀胱部分切除術を施行した。最終病理組織結果は，炎症性偽腫瘍であった。術後1年経過した現在，再発を認めていない。

A 44-year-old woman presented with persistent miction pain and mild fever despite of symptomatic treatment at another hospital. Cystoscopy revealed round solid mass 3.4 cm in diameter located at the dome. Transurethral resection（TUR）was performed for drainage and biopsy. As the bleeding was uncontrollable with transurethral procedure,partial cystectomy was performed. Pathological diagnosis of the tumor was an inflammatory myofibroblastic tumor consisted of spindle cells and positive staining for anaplastic lymphoma kinase. No local recurrence was seen 1 after surgery year.