[Role of computed tomography in the diagnosis and surveillance of hepatic alveolar echinococcosis].

Based on findings in 28 cases of hepatic alveolar echinococcosis, the most frequently encountered signs constituting a true "scannographic profile" are described. These include global hypodensity with poor or absent intensification of image after iodized contrast, very high frequency of intralesional calcifications often combined with necrotic plaques, peripheral retraction. Employed after standard radiologic imaging and ultrasonography, the scanner should be used to provide positive confirmation of the diagnosis of the parasitosis, and as a reference element in evaluation of intra- and peri-hepatic extension, both during the moment of choice of initial therapy and during follow-up reviews.