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A pulmonary hematoma is a collection of blood within the tissue of the lung. It may result when a pulmonary laceration fills with blood. A lung laceration filled with air is called a pneumatocele. In some cases, both pneumatoceles and hematomas exist in the same injured lung. Pulmonary hematomas take longer to heal than simple pneumatoceles and commonly leave the lungs scarred. A pulmonary contusion is another cause of bleeding within the lung tissue, but these result from microhemorrhages, multiple small bleeds, and the bleeding is not a discrete mass but rather occurs within the lung tissue. An indication of more severe damage to the lung than pulmonary contusion, a hematoma also takes longer to clear. Unlike contusions, hematomas do not usually interfere with gas exchange in the lung, but they do increase the risk of infection and abscess formation.

References

1. ^ White C, Stern EJ (1999). Chest Radiology Companion. Hagerstown, MD: Lippincott Williams & Wilkins. pp. 80, 176. ISBN 978-0-397-51732-9. Retrieved 2008-04-30.
2. Gavelli G, Canini R, Bertaccini P, Battista G, Bnà C, Fattori R (June 2002). "Traumatic injuries: imaging of thoracic injuries". European Radiology. 12 (6): 1273–1294. doi:10.1007/s00330-002-1439-6. PMID 12042932. S2CID 1919039.
3. Livingston DH, Hauser CJ (2003). "Trauma to the chest wall and lung". In Moore EE, Feliciano DV, Mattox KL (eds.). Trauma. Fifth Edition. McGraw-Hill Professional. pp. 525–528. ISBN 978-0-07-137069-1.
4. Miller DL, Mansour KA (2007). "Blunt traumatic lung injuries". Thoracic Surgery Clinics. 17 (1): 57–61. doi:10.1016/j.thorsurg.2007.03.017. PMID 17650697.

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