Gray scale ultrasound evaluation of hepatic neoplasms: patterns and correlations.

Ninety malignant hepatic neoplasms were studied by gray scale ultrasound. Four different ultrasonic patterns were observed: (a) discrete, relatively echo-free masses; (b) discrete, relatively echogenic masses; (c) totally echo-free masses; and (d) a diffuse alteration of echo architecture without discrete masses. There has been no apparent association of ultrasonic pattern with either the histologic type of neoplasm or the angiographic vascularity. Corresponding isotopic data is discussed.