title: A Case of Urethral Metastasis from Sigmoid Colon Cancer Diagnostically and Prognostically Indicated by F-18 FDG PET/CT.
abstract: Urethral metastasis from colorectal cancer is rare and is known to have a poor prognosis. A 72-year-old man with a history of colectomy and colostomy due to sigmoid colon cancer was admitted to the emergency room with bowel distension, rectal bleeding and urinary symptoms. Computed tomography of the abdominopelvis showed sigmoid colon cancer with multiple metastases involving the liver. Positron emission tomography with F-18 fluorodeoxyglucose (FDG) showed multiple hypermetabolic foci in the liver, penis and pubic bone, which otherwise could not be diagnosed. The lesions revealed no improvement with chemotherapy and urological surgery on follow-up F-18 FDG PET/CT. We present a case of urethral metastasis of sigmoid colon cancer diagnostically and prognostically indicated by F-18 FDG PET/CT.
authors.affiliation: Department of Internal Medicine, National Police Hospital, Seoul, Korea.
authors.forename: Han Seok
authors.initials: HS
authors.lastname: Seo
authors.affiliation: Department of Nuclear Medicine, National Police Hospital, 58, Garakbon-dong, Songpa-gu Seoul, 138-708 Korea.
authors.forename: Eun Sil
authors.initials: ES
authors.lastname: Kim
authors.affiliation: Department of Internal Medicine, National Police Hospital, Seoul, Korea.
authors.forename: Soyon
authors.initials: S
authors.lastname: Kim
authors.affiliation: Department of Internal Medicine, National Police Hospital, Seoul, Korea.
authors.forename: Su Jin
authors.initials: SJ
authors.lastname: Im
authors.affiliation: Department of Internal Medicine, National Police Hospital, Seoul, Korea.
authors.forename: Yong Hyun
authors.initials: YH
authors.lastname: Park
authors.affiliation: Department of Internal Medicine, National Police Hospital, Seoul, Korea.
authors.forename: Ju Hyoung
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Internal Medicine, National Police Hospital, Seoul, Korea.
authors.forename: So Chong
authors.initials: SC
authors.lastname: Hur
keywords: F-18 FDG PET/CT; Sigmoid colon cancer; Urethral metastasis