label: Bronchiolar Adenoma/Ciliated Muconodular Papillary Tumor
label_lc: bronchiolar adenoma/ciliated muconodular papillary tumor
description: "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."