Idiopathic pulmonary ossification

Idiopathic pulmonary ossification (also known as bony metaplasia of lung) is a rare disorder with unknown cause characterised by bony tissue within the lung.

Clinical presenation

The condition is asymptomatic but mild symptoms, restrictive pulmonary physiology, and impaired transfer factor have been described 2.

Radiographic features

Plain radiograph

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.

See also

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Article information

rID: 24009
System: Chest
Tags: refs, cases, stub
Synonyms or Alternate Spellings:
  • Ossifying pneumonitis
  • Bony metaplasia of lung
  • Arboriform pulmonary ossification
  • Idiopathic diffuse pulmonary ossification

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