What are the other types of pulmonary neoplasms?

Carcinoid tumors (1-2%, involve neuro-endocrine cells, smoking not a risk factor, occurs at proximal airways causing obstruction and obstructive symptoms with bleeding, surgical resection) Adenoid cystic carcinoma (salivary gland tumor at lower respiratory tract, surgical resection) Hamartomas (most common benign tumor, calcified, combines fats, proteins, cartilage epithelium..., smooth bordered nodules)