Esophageal lung in a 4-month-old infant.

Esophageal lung is an extremely rare congenital malformation characterized by an abnormal connection between the esophagus and the bronchial tree, without communication with the airway. We present the case of a 4-month-old female patient who was admitted to the hospital with a diagnosis of pneumonia. Complementary studies confirmed the presumptive diagnosis of esophageal lung. Surgical treatment was then decided upon, and a pneumonectomy with esophageal repair was performed. The patient progressed favorably.