Luisa Costa Andrade, Presenter: Nothing to Disclose

Daniel Andrade MD, Abstract Co-Author: Nothing to Disclose

Luis Curvo-Semedo MD, PhD, Abstract Co-Author: Nothing to Disclose

Filipe Caseiro-Alves, Abstract Co-Author: Nothing to Disclose

- To review the histological classification of cholangiocarcinomas (CCK) focusing on the less typical forms of presentation and acknowledging their biologic behaviour. - To describe the CT and MR findings of the less common histological sub-types of cholangiocarcinoma - To determine the usefulness of MR in the differential diagnosis and patient management.

Cholangiocarcinoma is an adenocarcinoma that originates in the bile duct epithelium. Depending on the anatomical location they are divided in intra-hepatic, also called cholangiocellular carcinoma and extra-hepatic, the latter further sub-divided into peripheral or hilar (Klatskin tumor) taking into account the implications for patient management. According to their morphological features they are also classified as mass-forming, periductal infiltrative and intra-ductal. Despite a straighforward definition the histological classification is more complex since cases of mixed HCC-CCK tumors and intra-ductal papillary mucinous biliary neoplasms (IPMBN) are being increasingly recognized in the literature. The purpose of this pictorial essay is to illustrate and describe the imaging features of the less well known forms of CCK addressing their biological behavior, mechanisms of spread, prognosis and major clues to the differential diagnosis.

http://abstract.rsna.org/uploads/2014/14005639/14005639_jq8z.pdf

Andrade, L, Andrade, D, Curvo-Semedo, L, Caseiro-Alves, F, Imaging Cholangiocarcinoma: All Equal, Some Different?.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14005639.html