RESUMO
Ultrasonic features of three cases of liver cell adenoma (LCA) and two cases of focal nodular hyperplasia (FNH) are presented. These tumors have similar sonographic appearances presenting either 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.
Assuntos
Carcinoma Hepatocelular/diagnóstico , Neoplasias Hepáticas/diagnóstico , Fígado/patologia , Ultrassonografia , Adulto , Carcinoma Hepatocelular/diagnóstico por imagem , Diagnóstico Diferencial , Feminino , Humanos , Hiperplasia , Fígado/diagnóstico por imagem , Neoplasias Hepáticas/diagnóstico por imagem , Cintilografia , TecnécioRESUMO
An area of increased radioactivity was visualized superior to the right kidney during the flow phase of a routine radionuclide renal angiography using 99mTc-Sn-DTPA. This same area failed to concentrate the radiopharmaceutical during delayed static images. This sequence suggested a highly vascular mass above the right kidney. The mass proved to be an adrenal pheochromocytoma as was suggested by the radionuclide study.
