Etymed
pneumonitis
Definition
inflammation of the lung tissue
Clinical context
A 65-year-old man presents with progressive dyspnea and dry cough over several weeks. Chest X-ray shows bilateral interstitial infiltrates with ground-glass appearance. His pulmonary function tests reveal restrictive defect. The patient has no significant smoking history but works as a farmer. The most likely diagnosis is pneumonitis due to environmental exposure.
Mnemonic
Pneumonitis = Pneumonia without infection (inflammation without bacteria)