Ultrasonic features and radionuclide correlation in liver cell adenoma and focal nodular hyperlasia.

Abstract
Ultrasonic features of 3 [human] cases f liver cell adenoma (LCA) and 2 cases of focal nodular hypeplasia (FNH) are presented. These tumors have similar sonographic appearances presenting as solid masses or containing sonolucent areas due to hemorrhage or necrosis. Although these ultrasonic features in patients with an area of decreased activity on 99mTc-sulfur colloid (Tc-SC) liver scans are not specific for LCA or FNH, such findings in the appropriate clinical setting are suggestive of these lesions. The combination of a solid mass on ultrasonography and a normal Tc-SC radioisotope liver study may be relatively specific for uncomplicated FNH.