Hamartoma is the most common benign neoplasm to occur in the lung. Histologically, the lesions consist of a combination of cartilage, connective tissue, smooth muscle, fat, and respiratory epithelium.
Pulmonary hamartomas occur more common in males.
A 21 year old male was admitted to the hospital because of his mass on the scapula. Routine laboratory investigations were within normal limits. The CT scan revealed a neoplastic lesion. It involved the pleura and caused decreased volume in the left hemithorax. Pulmonary function tests showed a restrictive pattern.