• Andrew M Moon, J Hamilton Howe, Katrina A McGinty, and David A Gerber.
• Division of Gastroenterology and Hepatology, University of North Carolina School of Medicine, 130 Mason Farm Rd, Bioinformatics Building CB# 7080, Chapel Hill, NC 27599-7080, USA.
• Radiol Case Rep. 2018 Jun 1; 13 (3): 640-643.

AbstractWe present the case of a 24-year-old woman with morbid obesity who came to the emergency department with right upper quadrant abdominal pain associated with nausea and vomiting. Her workup included a right upper quadrant ultrasound suggestive of a small gallbladder with cholelithiasis without sonographic evidence of acute cholecystitis. She underwent attempted laparoscopic cholecystectomy with no identifiable gallbladder during surgery. Postsurgical cross-sectional imaging confirmed gallbladder agenesis. This case provides an example of a rare but convincing clinical and radiologic mimic of cholelithiasis. In certain cases of biliary colic and imaging revealing a small gallbladder, a magnetic resonance cholangiopancreatography may be warranted to evaluate gallbladder agenesis and avoid unnecessary surgery.

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