嚥下魚骨による膀胱周囲肉芽腫

PERIVESICAL FOREIGN BODY GRANULOMA CAUSED BY A SWALLOWED FISH BONE : A CASE REPORT

　44歳，男性．排尿痛と残尿感を主訴に当科受診．腹部CT上，膀胱頂部に接して内部に不規則な低吸収域と直線状の高吸収域の存在する腫瘤を認めた．高熱と膿尿出現に伴い，腫瘤は著明に縮小したため，膀胱周囲膿瘍を疑い，経腹膜的に腫瘤を含めた膀胱部分切除術を施行．摘出標本内に魚骨が確認され，病理組織学的には炎症性肉芽腫であった．嚥下魚骨による膀胱周囲肉芽腫は，自験例が本邦14例目である．

A 44-year-old male was admitted to our department with the chief complaint of miction pain and feeling of residual urine. CT scan revealed a mass lesion in contact with the dome of the bladder, consisting of irregular low and linear high density area. The mass was evidently decreased, following high fever and pyuria, so perivesical abscess was suspected. Partial cystectomy with mass extirpation was transperitoneally performed. Fish bone was detected in the mass.