Connecting Radiology | Enabling collaboration and professional development
Hilar cholangiocarcinoma: thin-section spiral CT findings with cholangiographic correlation.
Han JK, Choi BI, Kim TK, Kim SW, Han MC, Yeon KM.
Department of Radiology, Seoul National University College of Medicine, South Korea.
Radiographics. 1997 Nov-Dec;17(6):1475-85
Hilar cholangiocarcinoma, a highly lethal tumor, is difficult to diagnose with conventional computed tomography (CT) because of its small size. Spiral CT allows more effective evaluation of these small lesions and better demonstrates the status of the hepatic arterial or portal venous circulation. Among 27 patients with hilar cholangiocarcinoma (infiltrative in 21, exophytic in two, polypoid in one, diffuse in three), thin-section spiral CT allowed identification of each tumor as an area of focal wall thickening that obliterated the lumen. Seventeen of the infiltrative tumors (81%) showed high attenuation. Identification of the level of biliary obstruction was possible in 63% of the patients (17 of 27). The level of obstruction was underestimated in six patients and overestimated in four. Spiral CT is a valuable method for diagnosis of hilar cholangiocarcinoma; however, spiral CT is less accurate in evaluation of intraductal tumor extent because of the limited z-axis resolution.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
Department of Radiology, Seoul National University College of Medicine, South Korea.
Radiographics. 1997 Nov-Dec;17(6):1475-85
Hilar cholangiocarcinoma, a highly lethal tumor, is difficult to diagnose with conventional computed tomography (CT) because of its small size. Spiral CT allows more effective evaluation of these small lesions and better demonstrates the status of the hepatic arterial or portal venous circulation. Among 27 patients with hilar cholangiocarcinoma (infiltrative in 21, exophytic in two, polypoid in one, diffuse in three), thin-section spiral CT allowed identification of each tumor as an area of focal wall thickening that obliterated the lumen. Seventeen of the infiltrative tumors (81%) showed high attenuation. Identification of the level of biliary obstruction was possible in 63% of the patients (17 of 27). The level of obstruction was underestimated in six patients and overestimated in four. Spiral CT is a valuable method for diagnosis of hilar cholangiocarcinoma; however, spiral CT is less accurate in evaluation of intraductal tumor extent because of the limited z-axis resolution.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
Views: 2
© 2024 Created by radRounds Radiology Network.
Powered by
