has symptom lymphoid interstitial pneumonia An idiopathic interstitial pneumonia which involves diffuse interstitial infiltration of involved areas mostly with T lymphocytes, plasma cells, and macrophages. Lymphoid hyperplasia is frequently seen. Onset is often slow with gradually increasing cough and breathlessness over 3 or more years. Fever, weight loss, chest pain, and arthralgia are occasionally found. Crackles may be detected as the disease progresses. disease_ontology MESH:C562489 DOID:0050159 idiopathic interstitial pneumonia cough