Solitary right ventricular outflow tract rhabdomyoma in non-tuberous sclerosis: resection in a 2.6-kg neonate.

A 2-week-old, 2.6-kg neonate without tuberous sclerosis presented with a severe right ventricular outflow tract obstruction secondary to a large mass. Transthoracic echocardiography revealed a maximum right ventricular outflow tract gradient of at least 95 mmHg. Given the level of obstruction, the decision was made to proceed with surgical resection.