Diagnosing cholangiocarcinoma in primary sclerosing cholangitis: an "evidence based radiology" review.

Cholangiocarcinoma is a serious but common complication of primary sclerosing cholangitis (PSC) that is often difficult to diagnose. The aim of this study was to conduct an evidence based radiology review of the diagnostic modalities used to identify cholangiocarcinoma in patients with PSC. A systematic review of the current best evidence was carried out and a diagnostic algorithm for cholangiocarcinoma in PSC is proposed.