Funnel chest describes an abnormal formation of the rib cage that gives the
chest a caved-in or sunken appearance. Funnel chest is caused by It is caused by
too much growth of the connective tissue that joins the ribs to the breastbone.
This causes the sternum to malform inward. The child typically has a depression
in the center of the chest over the sternum, and this may appear quite deep.
Funnel Chest Picture
Caved-in" chest. Usually an unimportant isolated finding evident at birth. (Funnel
chest can occasionally be part of a connective tissue disorder such as Marfan syndrome).