Laparoscopic cholecystectomy for a gallbladder with a right sided round ligament using indocyanine green fluorescence imaging: A case report

Introduction: The gallbladder with a right sided round ligament is a rare anomaly. It is frequently associated with various biliary, vascular, and other anomalies. Herein, we present a case of a gallbladder with a right-sided round ligament treated with laparoscopic cholecystectomy using indocyanine green fluorescence imaging. Presentation of case: A 50-year-old woman had right upper quadrant discomfort. Gallbladder stones, a polyp, and a right-sided round ligament were found on preoperative computed tomography. Laparoscopic cholecystectomy with indocyanine green fluorescence imaging was decided. During surgery, "fundus first technique" was performed and the biliary anatomy was confirmed with the aid of indocyanine green fluorescence guidance. The gallbladder was attached to segment 4 of the liver which was the left side of the round ligament. Cystic artery and cystic duct were ligated safely. The patient had no postoperative complication. Discussion: Although there are various anomalies in patients having a gallbladder with a rights-sided round ligament, ICG fluorescence imaging can show the anatomy of the extrahepatic biliary tree. It can enable surgeons to recognize concomitant vascular and biliary anomalies. Conclusion: Laparoscopic cholecystectomy for gallbladder with a right-sided round ligament can be safely performed by identifying biliary anatomy with indocyanine green fluorescence imaging.