Diffuse Pulmonary Ossification Associated with Chronic Bronchitis

Abstract

A thirty-three-year-old man with diffuse pulmonary ossification associated with chronic bronchitis is described. Chest roentgenograms of the patient showed diffuse reticulo-nodular shadows partially superimposed by calcified reticular opacities. Marked declines in forced vital capacity and air-flow limitation were associated with decreased diffusing capacity of the lung for CO, hypoxemia, and hypercapnia. In the postmortem examination, diffuse dendriform ossification was found mainly in the alveolar space. Neither interstitial fibrosis nor capillary congestion was found histopathologically in the lung. © 1987, The Japanese Society of Internal Medicine. All rights reserved.