:Correlation of Echograms and Histopathological Findings

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Real-time ultrasonographic study was performed in 79 patients with hepatocellular carcinoma (HCC) and 48 patients with metastatic liver carcinoma.We classified echograms of carcinoma of the liver into 3 types, nodular, massive and diffuse, according to the shape, and into 4 echo patterns, low, low periphery, high and mixed.HCC showed different echo patterns depending upon the size. In general, carcinomas smaller than 3 cm in diameter showed the low echo pattern and ones larger than 5 cm the high echo pattern. When compared with histopathological findings, echo patterns of liver carcinomas were significantly related to the degree of necrosis.Small HCC usually showed nodular type echograms of the low or low periphery echo pattern.Echograms of encapsulated HCC showed acoustic shadows on the lateral side of the tumor in 53.3% of the cases. The capsule of the tumor was seen as a low echo zone at the periphery.Differentiation of HCC from metastatic liver carcinoma was possible with an overall accuracy of 83.9% by the blind evaluation method.
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