Idiopathic Interstitial Pneumonia

**Semantic type:** Disease or Syndrome

**Definition:** Non-infectious inflammation of the interstitial lung tissue of unknown etiology. This category includes desquamative interstitial pneumonia, usual interstitial pneumonia, lymphocytic interstitial pneumonia, acute interstitial pneumonia, and nonspecific interstitial pneumonia.

**Synonyms:** - IIP - Idiopathic Interstitial Pneumonitis