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acute fibrinous organizing pneumonia

Lesions

- intra-alveolar fibrin (alveolar fibrinous exudates)
- organizing pneumonia (pulmonary organization)
- type 2 pneumocyte hyperplasia
- edema
- acute inflammation and chronic inflammation (inflammatory infiltrate)
- pulmonary interstitial widening

Associations

- collagen vascular disease

  • inflammatory myopathy
  • juvenile dermatomyositis (#15689928#)

- amiodarone
- Haemophilus influenza
- Acinetobacter lymphomaairspray
- severe acute respiratory syndrome (SARS) (#15272286#)
- construction work
- coal mining
- zoological work

Differential diagnosis

- organizing pneumonia

References

- Beasley MB, Franks TJ, Galvin JR, Gochuico B, Travis WD. Acute fibrinous and organizing pneumonia: a histological pattern of lung injury and possible variant of diffuse alveolar damage. Arch Pathol Lab Med. 2002 Sep;126(9):1064-70. PMID: #12204055#