Suspected Ureteral Metastasis from Colon Signet Ring Cell Carcinoma on F-18 FDG PET/CT

氟-18去氧氟化葡萄糖正子電腦斷層掃描發現結直腸戒環細胞癌切除後疑似轉移至輸尿管

10.6332/ANMMI.202409_37(3).0003

Li-fang Lin(林立芳)

colorectal signet ring cell carcinoma ； F-18 FDG PET ； ureteral metastases ； 結直腸戒環細胞癌 ； 輸尿管轉移 ； 氟-18去氧氟化葡萄糖正子電腦斷層掃描

核子醫學暨分子影像雜誌

37卷3期（2024 / 09 / 01）

94 - 99

英文;繁體中文

Colorectal signet ring cell carcinoma (CSRCC) is a rare subtype of adenocarcinoma of the colon and accounts for about 1% of all colorectal cancers. Therefore, articles on F-18 fluorodeoxyglucose (F-18 FDG) PET imaging in CSRCC are limited. The incidence of ureteral metastases is reported to be around 1% in autopsy studies. Ureteral metastases are usually found incidentally or at autopsy because most patients are asymptomatic. Here we present a case of CSRCC with suspected ureteral metastasis on F-18 FDG PET/CT 15 months after resection of descending colon tumor.

結直腸戒環細胞癌是一種罕見的結腸腺癌亞型，約占所有結直腸癌的百分之一。因此，關於結直腸戒環細胞癌的氟-18去氧氟化葡萄糖正子電腦斷層掃描成像的文章不多。據報導，屍體解剖研究中輸尿管轉移的發生率約為百分之一。輸尿管轉移通常是偶然發現或屍檢時發現的，因為大多數患者沒有症狀在這裡，我們介紹一例結直腸戒環細胞癌在切除後15個月出現疑似輸尿管轉移。