Bronchiolar Adenoma/Ciliated Muconodular Papillary Tumor

**Semantic type:** Neoplastic Process

**Definition:** A rare, benign, circumscribed nodule arising from the bronchioles. It is usually seen in middle-aged to elderly patients. It is characterized by the presence a two-layer cellular structure composed of a basal and luminal layer.

**Synonyms:** - BA/CMPT - Lung Peripheral Papilloma - Lung Solitary Peripheral Ciliated Glandular Papilloma