Left-Sided Gallbladder Without Situs Viscerum Inversus: A Rare Intraoperative Finding During Laparoscopic Cholecystectomy

Left-sided gallbladder without situs viscerum inversus (LSG-woSVI) is a rare congenital anomaly often discovered incidentally during surgery, as it frequentlyeludes preoperative imaging. We report a case of a 51-year-old male who presented with intermittent right upper abdominal pain for six months. Clinicalexamination and liver function tests were unremarkable. Ultrasound imaging detected cholelithiasis but failed to identify any positional anomalies. Duringroutine laparoscopic cholecystectomy, the gallbladder was unexpectedly found on the left side of the round ligament, confirming a diagnosis of true LSG-woSVI.No features of situs inversus were noted. An additional left subcostal port was placed to facilitate retraction and dissection. Careful dissection revealed thecystic duct joining the common hepatic duct on the right side, and the cystic artery running anterior to the duct from right to left. Retrograde cholecystectomy wascompleted without complications. Histopathology confirmed chronic cholecystitis. The patient recovered uneventfully and was discharged on thesecond postoperative day. This case highlights the importance of intraoperative vigilance and awareness of anatomical variants in laparoscopic surgery,especially when preoperative imaging fails to detect anomalies. Prompt recognition and appropriate modification of surgical technique are crucial toavoid bile duct injury and ensure safe outcomes.