Congenital sternal abnormality

The sternum or breastbone is a long flat bone located in the central part of the chest. It connects to the ribs via cartilage and forms the front of the rib cage, thus helping to protect the heart, lungs, and major blood vessels from injury. [Source: Wikipedia ]

Synonyms
Congenital abnormality of the sternum
Subtypes
Defect in distal sternum
Oversegmentation of sternum
Undersegmentation of sternum