A 20-Year-Old Man With Disproportionate Chest Radiograph Abnormality

A 20-year-old man presented to the pulmonology outpatient clinic with gradually progressive exertional dyspnea for 2 years. He denied history of fever, cough, wheezing, chest tightness, weight loss, or hemoptysis. He had no history of tobacco use and worked as a clerk at the airport. There was no occupational or environmental exposure. He had no medical or pulmonary or cardiac history. His family history was noncontributory.