Pectus excavatum is a congenital deformity (often present at birth) of the sternum, which is pressed into the chest, resulting in a "caved-in" or sunken appearance. Dr. Andre Hebra, the director of the division of pediatric surgery at MUSC, talks about pectus excavatum, how it can cause health problems and when to consider surgical repair. Dr. Hebra explains how minimally invasive surgery, or the Nuss procedure, is used by inserting a concave steel bar underneath the sternum to correct the deformity.