Swyer-James-MacLeod Syndrome in a Patient With Eisenmenger Syndrome

Abstract Swyer-James-MacLeod syndrome is a condition characterized radiologically by hyperlucency in a single lung lobe associated with reduced vascularity, alveolar hyperdistention, and air trapping in the absence of bronchial airway obstruction. Ventricular septal defect is the most common congenital heart defect in childhood and causes irreversible pulmonary hypertension and Eisenmenger syndrome if not treated in a timely manner. In this case report, we present a 25-year-old patient with Swyer-James-MacLeod syndrome and Eisenmenger syndrome. Including Swyer-James-MacLeod syndrome in the differential diagnosis of patients with atypically distributed pulmonary emphysema and unilateral hyperlucency is important for early diagnosis and timely treatment.