Key Feature Summary for Mucous gland adenoma
- Rare benign proximal endobronchial tumor
- Airway obstruction symptoms common
- Exophytic, mucoid endobronchial nodules
- Cystic, acinar, tubular architecture
- Bland mucous cell lining, no atypia
- Positive for keratin, EMA, and CEA; low Ki-67 proliferation index
- Main differential diagnosis: mucoepidermoid carcinoma, mucinous adenocarcinoma
- Cured by complete resection
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