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There are two predominant types of congenital chest wall deformities. Pectus excavatum, also described as "cave chest" or "funnel chest," is the most common with a prevalence of roughly 1 in 400 children. The sunken chest of pectus excavatum is five times more common than the opposite presentation of pectus carinatum or "pigeon chest." Present in childhood, but progressively more noticeable during the rapid growth years of puberty, pectus carinatum may be the more noticeable of the two presentations because the associated prominence of the protruding chest wall can't be hidden by clothing.
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