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Two unreleated adult males were found to be suffering from an association of pan-lobular severe emphysema and hepatomegally of unknown origin which led to the discovery of a marked deficit in alpha-1 antitrypsin (A1-AT) in relation to a PiZ phenotype. Liver biopsy revealed cirrhosis with portal fibrosis in one case and in both cases fatty infiltration with the accumulation of a glycoprotein antigenically identical to A1-AT. Electron microscopy showed this protein to be situated within the dilated lumina of the endoplasmic reticulum of the hepatocytes. A1-AT deficiency is usually associated with pulmonary involvement only in the adult and liver involvement only in the child. The association of the two remains rare--hence the interest of the two cases reported.
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