2025-11-272025-11-27http://hdl.handle.net/2263/106068Clinical history : A 7 4 year old male with diagnosis of diffuse pulmonary fibrosis of unknown aetiology.Autopsy findings : 1. Diffuse pulmonary fibrosis.2. Right ventricular hypertrophy of heart.3. Clubbing of fingers and cyanosis.Diagnosis: Hamman-Rich syndrome