Gastrointestinal: Cholecystocolonic fistula: A rare cause of large bowel obstruction

Hemorrhagic Necrotizing Cholecystitis With Cholecystocolonic Fistula: A Case Report

Cholecystocolonic fistula (CCF) and hemorrhagic cholecystitis are rare complications of gallstones that have a wide range of non-specific symptoms and clinical severity. We present a case of a 74-year-old woman on warfarin who presented to the emergency department with a 10-day history of abdominal pain, vomiting, and watery diarrhea. Her abdomen was distended with generalized tenderness and palpable mass in the right lower quadrant. Laboratory tests revealed leukocytosis and an elevated international normalized ratio (INR). After admission and imaging, exploratory laparotomy showed hemorrhagic cholecystitis with CCF in the cecum. There was no pus or stool contamination. A cholecystectomy followed by right hemicolectomy with primary ileocolic anastomosis was performed. The postoperative course was uneventful, and the patient was discharged in stable condition. The presence of hemorrhagic cholecystitis in conjunction with CCF could lead to significant consequences such as hemorrhagic and septic shock in older patients with comorbidities. It is crucial to identify and intervene early before clinical deterioration.