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[Chronic diffuse interstitial pneumonia associated with chronic active hepatitis. 2 cases].

Two cases of chronic active hepatitis associated with diffuse interstitial pneumonia (lymphoid in one patient, lymphoid and fibrosing in the other) are reported. Histopathological data from the lungs, together with the parallel course of pulmonary and hepatic manifestations observed under corticosteroid therapy, suggest that these two diseases shared a common dysimmune pathogenesis. A few cases identical with these have been found in the literature. The clinical, laboratory and histopathological elements obtained from these cases also suggest an immune cause in most patients.