Unusual hemodynamics and pseudolesions of the noncirrhotic liver at CT

Kengo Yoshimitsu, Hiroshi Honda, Toshiro Kuroiwa, Hiroyuki Irie, Hitoshi Aibe, Kenji Shinozaki, Kouji Masuda

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Abstract

Recognition of pseudolesions of the liver at computed tomography (CT) is important because of their close resemblance to primary liver cancers or metastases. Two types of pseudolesion in the noncirrhotic liver include that due to transient extrinsic compression, typically caused by ribs or the diaphragm, and that due to a "third inflow" of blood from other than the usual hepatic arterial and portal venous sources: the cholecystic, parabiliary, or epigastric-paraumbilical venous system. Although the location of both types of pseudolesion are characteristic, their appearances at CT during arterial portography and CT during selective angiography vary from nonenhanced low-attenuation areas to well-enhanced high-attenuation areas, depending on the amount and timing of the inflow and presence or absence of focal metabolic alteration of the hepatocytes. Radiologists need to understand the underlying mechanism of these pseudolesions to better recognize the wide range of their appearances at CT.

Original languageEnglish
Pages (from-to)S81-S96
JournalRadiographics
Volume21
Issue numberSPEC.ISS.
Publication statusPublished - Dec 1 2001

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All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

Yoshimitsu, K., Honda, H., Kuroiwa, T., Irie, H., Aibe, H., Shinozaki, K., & Masuda, K. (2001). Unusual hemodynamics and pseudolesions of the noncirrhotic liver at CT. Radiographics, 21(SPEC.ISS.), S81-S96.