Case report: Congenital cystic adenomatoid malformation of an entire lung in a 33-year-old man: a case report and review of the literature.

Congenital cystic adenomatoid malformation (CCAM) is a rare developmental, non-hereditary, hamartomatous abnormality of the lung with adenomatoid proliferation of cysts resembling bronchioles. It is usually unilateral with involvement of a single lobe. We report an unusual case of a 33-year-old man who presented with this disease with the involvement of an entire lung. We discuss the patient's pathogenesis, histological findings, clinical presentation, imaging characteristics and treatment, and review the associated literature.