A rare case of disseminated pulmonary ossification associated with fibrotic lung disease

Abstract

Abstract Disseminated pulmonary ossification (DPO) is a rare disease characterised by diffuse calcification/ossification of lung parenchyma. Most of the cases are idiopathic, while rest of the cause may have underlying cause like lung congestion, lung injury, lung amyloidosis and interstitial lung disease (ILD). We present a rare case of 58-year-old women with progressive dyspnoea and dry cough. On CT, there were extensive confluent nodular and linear calcification of bilateral lung parenchyma associated with lung fibrosis. Imaging findings lead to diagnosis of DPO associated with idiopathic lung fibrosis. Development of such calcification in ILD is very unusual, therefore knowledge of imaging features of DPO is very crucial for its diagnosis.