Organizing Pneumonia

**Definition:** Any obstructive lung disease characterized by consolidated formation of GRANULATION TISSUE polyps within ALVEOLAR DUCTS AND ALVEOLI. It is classified as either primary (cryptogenic organizing pneumonia) or secondary organizing pneumonia. Secondary organizing pneumonia after transplantation is called bronchiolitis obliterans syndrome.

**Tree numbers:** - C08.127.446.135.140.600 - C08.381.495.146.135.140.600