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Radiology, Vol 172, 35-40, Copyright © 1989 by Radiological Society of North America

ARTICLES

Biliary carcinoma: CT evaluation of extrahepatic spread

JT Engels, DM Balfe and JK Lee
Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO 63110.

The authors studied the computed tomographic (CT) images obtained in 56 patients with pathologically proved biliary cancer and 75 patients with no evidence of biliary disease, attempting to define the normal anatomy of the lymphatic system draining the bile ducts and the prevalence of extrahepatic spread of primary biliary cancer into these retroperitoneal planes. Of 20 patients with gallbladder cancer, 14 (70%) had proved adenopathy and nine (45%) had peritoneal spread at presentation, and another three later developed carcinomatosis. Of 22 patients with proximal cholangiocarcinoma, 16 (73%) had nodal involvement at presentation, four later developed adenopathy, and five had peritoneal dissemination. Distal or diffuse cholangiocarcinomas were less associated with metastatic nodes or peritoneal spread. For all biliary cancers, the nodes most commonly involved were the node of the foramen of Winslow, the superior pancreatoduodenal node, and the posterior pancreatoduodenal chain. Extrahepatic tumor spread produced proximal intestinal obstruction in 13 patients (23%). CT reliably demonstrates lymphatic or other extrahepatic spread of biliary cancers, which may have an important bearing on management decisions.


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