感染性尿膜管嚢胞を伴った尿膜管癌

A Case Report of Urachal Cancer Complicated Infected Urachal Cyst

　症例は53歳，女性。下腹部痛，発熱を訴えて受診した。腹部CT,MRIで感染性尿膜管嚢胞が疑われ，腹部腫瘤にドレーンを置いた。ドレーン洗浄液と尿の細胞診がクラスⅣであったため，尿膜管癌と診断し，臍尿膜管全摘除術，膀胱部分切除術および骨盤リンパ節郭清を施行した。病理組織診は，粘液産生を伴う高分化型腺癌であった。リンパ節転移は認めなかった。術後6か月を経過した現在，再発，転移を認めていない。

A 53-year-old woman was admitted to our hospital with the chief complaints of lower abdominal pain and fever. Abdominal CT and MRI demonstrated a cystic mass extend-ing from umblicus to the bladder dome, which was suspected to be an infected urachal cyst. When the abdominal mass was punctured, turbid whitish pus was obtained, and cyto-logical examination were positive for malignancy. The diagnosis was urachal cancer with infected urachal cyst. En bloc partial cystectomy and pelvic lymphadenectomy were performed. Histopathological examination showed a well-differentiated adenocarcinoma.