Follicular Bronchitis/Bronchiolitis

**Semantic type:** Disease or Syndrome

**Definition:** A non-neoplastic disorder characterized by the formation of reactive lymphoid follicles adjacent to distal bronchi and bronchioles. It presents with mild shortness of breath and is associated with immunodeficiency syndromes and collagen vascular disorders.

**Synonyms:** - Follicular Hyperplasia of BALT - Pulmonary Lymphoid Hyperplasia