The papillary subtype is the rarest form of perihilar CCA, and these lesions are typically friable and do not invade through the ductal epithelium. As such, papillary lesions may have a more ...

No writing assistance was utilized in the production of this manuscript. Perihilar cholangiocarcinoma (CCA) is a complex disease best approached by a multimodal treatment regimen. The incidence of ...