He is the author of more than 500 publications dealing with all aspects of thoracic pathology, including the 4th series Fascicle: Tumors of the Serosal Membranes, and Atlas of Interstitial Lung Disease Pathology. His areas of special interest are the diagnosis of malignant mesothelioma, the separation of benign from malignant mesothelial proliferations, and the diagnosis and classification of interstitial lung disease.