Cryptogenic organizing pneumonia

Cryptogenic organizing pneumonia
Other namesBronchiolitis obliterans with organizing pneumonia, idiopathic interstitial pneumonia[1]
Micrograph showing a Masson body (off center left/bottom of the image – pale circular and paucicellular), as may be seen in cryptogenic organizing pneumonia. The Masson body plugs the airway. The artery associated with the obliterated airway is also seen (far left of the image). H&E stain.
SpecialtyPulmonology 
Symptomscough, labored breathing, fever, fatigue, unexpected weight loss[1]

Cryptogenic organizing pneumonia (COP), formerly known as bronchiolitis obliterans organizing pneumonia (BOOP), is an inflammation of the bronchioles (bronchiolitis) and surrounding tissue in the lungs.[2][3] It is a form of idiopathic interstitial pneumonia.[4]

It is often a complication of an existing chronic inflammatory disease such as rheumatoid arthritis, dermatomyositis, or it can be a side effect of certain medications such as amiodarone. COP was first described by Gary Epler in 1985.[5]

The clinical features and radiological imaging resemble infectious pneumonia. However, diagnosis is suspected after there is no response to multiple antibiotics, and blood and sputum cultures are negative for organisms.

  1. ^ a b "Cryptogenic organizing pneumonia". Autoimmune Registry Inc. Retrieved 15 June 2022.
  2. ^ "bronchiolitis obliterans with organizing pneumonia" at Dorland's Medical Dictionary
  3. ^ White, Eric J. Stern, Charles S. (1999). Chest radiology companion. Philadelphia: Lippincott Williams & Wilkins. p. 76. ISBN 978-0-397-51732-9.{{cite book}}: CS1 maint: multiple names: authors list (link)
  4. ^ "Cryptogenic Organizing Pneumonia - Pulmonary Disorders".
  5. ^ Epler GR (June 2011). "Bronchiolitis obliterans organizing pneumonia, 25 years: a variety of causes, but what are the treatment options?". Expert Rev Respir Med. 5 (3): 353–61. doi:10.1586/ers.11.19. PMID 21702658. S2CID 207222916.