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Isolated agenesis of the gallbladder.

We report a rare case of agenesis of the gallbladder, which was misdiagnosed as cholecystitis. This is the first reported case from the Middle East. Despite advances in biliary imaging, the diagnosis is usually made at surgery. Like most patients, our patient became asymptomatic after the surgery. Extensive dissection to exclude the presence of gallbladder in an ectopic site is discouraged.