Cholecystocolonic fistula

Case contributed by Vitalii Rogalskyi
Diagnosis certain


Dull abdominal pain, constipation.

Patient Data

Age: 75 years
Gender: Female

CT Abdomen and Pelvis


The gallbladder is shrunken, with intraluminal air bubbles. The hepatic flexure of colon adheres to gallbladder with visible fistulous tract. 

Sigmoid diverticulosis: sigmoid wall thickening, many diverticula (non-inflamed) and luminal narrowing. There is ovoid foreign body within sigmoid lumen in keeping with a migrated gallbladder stone.

Left adrenal adenomas, bilateral simple renal cysts, duodenal diverticula. 

Annotated Images

Annotated image

First image: fistula between gallbladder and ascending colon.

Second image: migrated gallstone impacted within sigmoid colon lumen.

Case Discussion

Classical case of cholecystocolonic fistula. This is rarely diagnosed before surgery. It may lead to liver abscess or large bowel obstruction (no signs of either in our case).

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.