About The Medical Condition Pneumonitis, Radiation
Find the definition of the medical term Pneumonitis, Radiation. Pneumonitis, Radiation defined and explained for easy understanding at the Medical Conditions from ClusterMed.info.
Pneumonitis, Radiation
| Pneumonitis, Radiation Medical Condition |
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What's The Definition Of The Medical Condition Pneumonitis, Radiation?
Injurious effects of radiotherapy on the lungs. There are three phases in the reaction of the lungs to radiation injury: an acute phase occurring 1 to 2 months after exposure, a subacute phase 2 to 9 months after exposure, and a chronic or fibrotic phase more than 9 months after exposure. In the acute phase there is vascular damage, congestion, edema, and mononuclear cell infiltration; in the subacute phase the alveolar walls are infiltrated with mononuclear inflammatory cells and fibroblasts; in the chronic phase, alveolar fibrosis and capillary sclerosis take place. (Cecil Textbook of Medicine, 19th ed, p2343)
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