Masson bodies are seen in:
Masson bodies is characterized by involvement of alveolar space. Alveolar space & bronchioles have collection of Fibroblast. It is seen in patient with Cryptogenic Organizing Pneumonia. Cryptogenic organizing pneumonia aka bronchiolitis obliterans organizing pneumonia. Usual interstitial pneumonia - associated with Idiopathic pulmonary fibrosis .
Usual interstitial pneumonia
Non-specific interstitial pneumonia
Cryptogenic Organizing Pneumonia
Hyaline membrane disease
Infectious Lung Disease: Pneumonia