排尿困難をきたした膀胱神経線維腫

Bladder Neurofibroma with Dysuria

　79歳，男性。排尿困難を主訴に当科を受診した。直腸診にて前立腺の肥大を認めた。膀胱鏡検査にて膀胱頸部2時の方向に膀胱頸部を閉鎖するような直径1cm台の腫瘤を認めた。腫瘤を経尿道的に切除した。病理組織検査にて膀胱神経線維腫と診断された。術後排尿困難は改善した。

A 79-year-old man consulted our hospital complainig dysuria. Digital rectal examination showed enlarged pros-tate. The prostate specific antigen level was 7.8ng/ml. Transrectal needle biopsy of prostate revealed benign prostate hyperplasia. Cystoscopy showed a mass near the bladder neck at the position of 2 o'clock, which occupied bladder neck. The tumor was tansurethrally resected and histological examination revealed benign neurofibroma, confirmed on staining for S-100 protein. After operation dysuria was improved.