Lymphocytic Interstitial Pneumonia

**Semantic type:** Disease or Syndrome

**Definition:** Interstitial pneumonia characterized by the presence of bibasilar pulmonary interstitial infiltrates composed of lymphocytes and plasma cells. It may be associated with autoimmune and lymphoproliferative disorders. Signs and symptoms include fever, cough, and dyspnea. Symptomatic patients may require immunosuppressive treatment.

**Synonyms:** - Diffuse Hyperplasia of Bronchus-Associated Lymphoid Tissue - LIP - Lymphocytic Interstitial Pneumonitis - Lymphocytic interst. pneumonitis - Lymphocytic interstitial pneumonitis