Cystic Duct with Medial Spiral Insertion: A Case Report.

Introduction: The biliary system is well known for its anatomical variability. Precise imaging and evaluation of the cystic duct are essential for surgeons and interventional radiologists. Case report: We reported a rare case of cystic duct variation. Coronal oblique 3D magnetic resonance cholangiopancreatography (MRCP) showed posterior spiral course of cystic duct with medial spiral insertion to the mid part of the extrahepatic bile duct. Intraoperative cholangiogram also confirms the finding. Conclusions: Specific anatomical variations might require modifications to the surgical approach. Understanding cystic duct anatomy, variants, and disease processes aids in better diagnosis and interpretation of imaging results. MRCP is essential in giving important information on cystic duct anatomy and helps in preparing for and reducing the risk of complications during percutaneous, endoscopic, and surgical procedures.