Pediatric amastia is the absence of the entire breast — including the breast tissue, nipple and areola.
Amastia is a rare, congenital (present at birth) condition in which a child’s breast tissue doesn’t develop. Amastia can affect one (unilateral) or both (bilateral) breasts. Children with bilateral amastia often have other birth defects.
Amastia can be caused by several genetic conditions that affect a child’s DNA and development, including: