Scintigraphic right-to-left liver lobe ratio and liver-to-spleen ratio in cirrhosis and non cirrhotic liver diseases.

ABSTRACT

Various criteria are used together for the scintigraphic diagnosis of cirrhosis as no single criterion may be reliable. However, low right-to-left hepatic lobe uptake ratio has been reported to be sensitive and specific for alcoholic cirrhosis. A low liver-to-spleen uptake ratio has also been reported in various hepatocellular disorders. We tested these ratios in patients with cirrhosis and non cirrhotic causes of portal hypertension. The right-to-left lobe uptake ratio was significantly lower (1.59 +/- 1.23 vs 2.36 +/- 0.63 in normals; p = 0.037) in only Child's C alcoholic cirrhosis, but the sensitivity of this ratio was low (40%) even in this subgroup of cirrhosis (mean +/- SD 1.72 +/- 1.08) as against 1 of 10 patients with non cirrhotic portal hypertension (3.57 +/- 1.33; p = 0.0005). We conclude that the right-to-left hepatic lobe uptake ratio is not a discriminatory scintigraphic sign in liver disease. A low liver-to-spleen uptake ratio can distinguish cirrhosis from non cirrhotic causes of portal hypertension.