Suspected large gall bladder mucocele extending from right hypochondrium up to right iliac region turned out to be gall bladder perforation in a patient with schizophrenia: A rare case report and literature review.

Key Clinical Message: This is a challenging case where the surgeon has initially thought it is a gallbladder (GB) mucocele. The surprise finding of a mucocele during an emergency laparotomy highlights the deceptive nature of certain clinical manifestations within the hepatobiliary domain. The intraoperative discovery of a 1×1 cm GB hole on the right lateral wall of the GB fundus revealed an unexpected and significant deviation from the hypothesized pathogenesis.