Perforated gallbladder in a parastomal hernia.

We present an 87-year-old woman who presented to the emergency department with a 7-day history of severe abdominal pain at her ileostomy parastomal hernia site. Prior to presentation, her general practitioner had started her on a reducing steroid dose for suspected Crohn's disease exacerbation. On examination, she had a distended abdomen with localised guarding and tenderness over her hernia site. A CT scan demonstrated an incarcerated perforated gallbladder within her parastomal hernia. Successful surgical management was performed involving an enterotomy, refashioning her ileostomy and an open cholecystectomy. The patient recovered well with a short postoperative stay. This report is intended as a guide for clinicians in the differential diagnoses for acute abdominal pain and an unusual presentation of a gallbladder perforation.