Pectus Excavatum is a deformation of the chest wall that occurs quite common in children and adolescents, mainly of the male sex (prevalence of 2-3‰ births in Spain).
It is caused by a deficit in the growth of coastal cartilage.
Over the years, and consequent growth of the chest, the cartilage drags the sternum inwards, making the sinking more evident.
In addition to the aesthetic disorder that this generates (with its consequent psychological effects), Pectus Excavatum can generate respiratory, spine and heart problems. However, most cases, about 75%, are not operated on due to the complexity of the treatment.