Atresia, anal: Congenital absence of an opening at the bottom end of the intestinal tract. Also called imperforate anus. Occurs in about 1 in 5,000 births. It is corrected by surgery.
Atresia refers to the absence of a normal opening.
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Pancreatitis is inflammation of an organ in the abdomen called the pancreas. See AnswerHealth Solutions From Our Sponsors