Giant pulmonary valve cyst in a 7-year-old child.

This report describes the diagnosis and surgical management of a pulmonary valve cystic mass in a symptomatic 7-year-old boy. Cardiac valve cysts are extremely rare beyond the age of 6 months and typically not associated with symptoms. These lesions may grow, leading to progressive stenosis, regurgitation, or ventricular outflow tract obstruction. Therefore, these lesions should be monitored for change in size and/or, hemodynamic changes. Surgical intervention may be required for symptomatic patients.