Hepatocytic PAS-positive diastase-resistance inclusions in the absence of alpha-1-antitrypsin deficiency--high prevalence in alcoholic cirrhosis

American Journal of Clinical Pathology
E A ParienteJ P Benhamou

Abstract

The presence of PAS-positive, diastase-resistant inclusions in the cytoplasm of the hepatocytes is characteristic of alpha-1-antitrypsin deficiency. The purpose of this investigation was to determine whether the presence of these inclusions is a specific feature, permitting the recognition of alpha-1-antitrypsin deficiency in patients with liver disease. We examined the liver specimens from 20 patients suffering from alcoholic cirrhosis with the Pi M phenotype, i.e., in whom alpha-1-antitrypsin deficiency was excluded. In seven of these patients, PAS-positive, diastase-resistant inclusions were seen in the hepatocytes; in two patients, these inclusions contained a material antigenically similar to alpha-1-antitrypsin. These inclusions might represent deposits of glycoproteins poorly excreted by the diseased hepatocytes. It is concluded that, in patients with liver disease, the presence of PAS-positive, diastase-resistant inclusions--even containing alpha-1-antitrypsin--in the cytoplasm of the hepatocytes does not permit the hepatic lesions to be ascribed to alpha-1-antitrypsin deficiency.

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