Idiopathic pulmonary ossification (also known as bony metaplasia of lung) is a rare disorder with unknown cause characterised by bony tissue within the lung.
The condition is asymptomatic but mild symptoms, restrictive pulmonary physiology, and impaired transfer factor have been described 2.
May show branching calcific shadows are usually seen in lower parts of lungs.
High attenuating linear or reticular shadows may be recognised. Sometimes trabeculae may be appreciated.