This document discusses obstructive jaundice, including a case study of an 82-year-old male patient presenting with progressive jaundice, itching, weight loss, and other symptoms. It reviews the causes, pathophysiology, investigations, and management of obstructive jaundice. Common causes include gallstones, pancreatic cancer, and cholangiocarcinoma. Investigations may include blood tests, ultrasound, CT, MRCP, and ERCP. Management depends on the underlying cause but may involve surgical procedures like cholecystectomy, Whipple procedure, or stenting to relieve the obstruction.