ABSTRACT
Pulmonary hamartoma is made up of "normal" tissues such as cartilage, connective tissue, fat, and muscle but in abnormal amounts. Pulmonary papilloma generally occurs as exophytic tumor in the more proximal upper airways and occasionally in the more distal location with an inverted growth pattern. Possible risk factors for pulmonary benign tumors include foreign body, smoking, previous tuberculosis, and human papillomavirus. Diagnosis of pulmonary benign tumors and preinvasive lesions involves chest x-ray, CT, fine needle aspiration (FNA), bronchoscopy and histological examination. Glandular papilloma is a very rare tumor that occurs predominantly in the central tracheobronchial tree. Surgical resection may be performed on pulmonary benign tumors that cause problems or continue to grow, without further treatment, apart from management of any underlying complications related to the nodule such as pneumonia or an obstruction.
