Cholecystogastric fistula masquerading as gastrointestinal stromal tumour: Unusual presentation of gallbladder adenomyomatosis - a case report.
Gerelt-Od Khenmedekh, Dae Hoon Kim, Dong Hee Ryu et al.
✦ AI-curated · Sources linked
Case in brief
A 71-year-old woman presented with acute abdominal pain and signs of mechanical small-bowel obstruction. Imaging revealed a 6-cm mass near the gastric antrum, initially suspected to be an invasive gastrointestinal stromal tumor. Emergency surgery uncovered gallbladder adenomyomatosis leading to a cholecystogastric fistula. Histopathology confirmed gallbladder adenomyomatosis without malignancy, and the patient recovered well postoperatively.
What made this case unusual
The case exemplifies how gallbladder adenomyomatosis can mimic an invasive gastric neoplasm, complicating diagnosis and management.
Diagnostic / clinical pearl
Clinicians should be aware that gallbladder adenomyomatosis can present as a mass mimicking malignancy, particularly when the gallbladder is not visualized on imaging.
Why it matters
Recognizing biliary red flags in imaging and endoscopy is crucial for preventing misdiagnosis and ensuring appropriate surgical intervention.