Related Experiment Video
Updated: Jun 6, 2026

Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
Published on: January 22, 2018
Diuresis makes vesicocolic fistula visible on FDG PET/CT
Pan-Fu Kao1, Jui-Hung Weng, Hsien-Chun Tseng
1Department of Nuclear Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan, Republic of China. pfkao@yahoo.com.tw
Abstract:
A 71-year-old man with rectal cancer history was referred for FDG PET/CT due to serum carcinoembryonic antigen level elevation. In addition to rectal cancer recurrent lesion, the FDG PET/CT scan also showed homogeneous intense FDG accumulation in the whole segment of descending colon and a small air bubble in the urinary bladder. After furosemide injection, the vesicocolic fistula was confirmed by typical air pattern in the urinary bladder on attenuation CT images and the decrease FDG activity in the descending colon. The patient has had the clinical manifestations of pneumaturia and watery diarrhea which support the diagnosis of vesicocolic fistula.
Related Concept Videos
Imaging Studies VI: Voiding Cystourethrography and Cystography
Imaging Studies V: Intravenous Urography and Retrograde Pyelography
Imaging Studies III: Computed Tomography
Imaging Studies VII: Vascular Imaging
Imaging Studies II: Ultrasonography
Urodynamic Studies: Uroflowmetry