Warning: This article features an image of a large tumor that was in a patient's heart, and it may be disturbing. Discretion is advised. A team of surgeons at Northwestern Medicine achieved a ...

After a routine ultrasound at 24 weeks, Brailey and Louis Valenzuela learned some unexpected news about their baby, Arley — she had an olive-sized tumor on her heart known as pericardial teratoma. “We ...