Image Description
Epidemiology: The prevalence of intraductal papillary neoplasm of the bile duct (IPNB) shows wide geographic differences. It is more common in the Far East (10% to 38% of all bile duct tumors) than in the Western countries (7% to 12% of all bile duct tumors). The high prevalence in the Far East is due to hepatolithiasis, primary sclerosing cholangitis and liver fluke infections (clonorchiasis & opisthorchiasis) - the major risk factors of IPNB - which are endemic in that region.
This image shows an IPNB growing within the lumen of common bile duct.
This image shows an IPNB growing within the lumen of common bile duct.