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Radiology, Vol 187, 695-699, Copyright © 1993 by Radiological Society of North America

ARTICLES

Early-enhancing pseudolesion in medial segment of left hepatic lobe detected with multisection dynamic MR

K Ito, T Choji, T Fujita, T Matsumoto, T Nakada and T Nakanishi
Department of Radiology, Yamaguchi University School of Medicine, Japan.

On multisection dynamic magnetic resonance (MR) images obtained in the arterial-dominant phase, the authors have occasionally noted the presence of an early-enhancing pseudolesion, which is not a hypervascular tumor, in the medial segment of the left hepatic lobe. Multisection dynamic MR imaging was performed in 185 patients with suspected liver disease. A suspect early-enhancing pseudolesion was present in six of the 185 patients. In all six patients, the pseudolesion was located in the subcapsular portion adjacent to the porta hepatis in the medial segment of the left hepatic lobe. Corroborative and follow-up studies failed to demonstrate any evidence of a pathologic condition, therefore justifying the term "pseudolesion." Radiologists should be aware of the possibility of the presence of this early-enhancing pseudolesion in this typical location on multisection dynamic MR images, because such a finding may be misinterpreted as a true lesion.


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