REDUCED RADIOACTIVITY IN THE PERIPHERY OF THE LIVER IN A PATIENT WITHIDIOPATHIC PORTAL-HYPERTENSION

The authors report a case of idiopathic portal hypertension in which r adioaccumulation in the peripheral region of the liver decreased marke dly, On dynamic CT, peripheral regional enhancement of the liver was s een in the arterial phase, The region was hypointense on T1-weighted M R images and hyperintense on T2-weighted images. On portograms via the superior mesenteric artery, markedly decreased portal venous perfusio n was seen in the peripheral region of the liver. Tc-99m galactosyl hu man serum albumin (GSA) liver scintigrams showed decreased accumulatio n in the peripheral region and unchanged accumulation in the central r egion of the liver, Tc-99m GSA liver scintigraphy clearly showed local ized liver dysfunction in the peripheral region.