SSC is clinically related to primary sclerosing cholangitis (PSC), but originates from a known pathological process. Diagnosis of PSC requires the exclusion of all secondary causes of sclerosing cholangitis; else, if a known aetiology can be uncovered, SSC is diagnosed. Its clinical and cholangiographic features may mimic PSC, yet its natural history may be more favorable if recognition is prompt and appropriate therapy is introduced.