Choledochal Cyst and Malignancy: A Plea for Lifelong Follow-Up

Choledochal cysts carry a 6-30% malignancy risk in adults, with rare cases in children. Even after surgical excision, patients face a lifelong 4% cancer risk, necessitating annual surveillance with CA19-9 and ultrasound. This review examines malignancy patterns and proposes a structured postoperative follow-up protocol.