Atresia - congenital absence of natural openings or lumen of hollow organs and vessels (aorta, pulmonary trunk, anus, vagina, urinary tract and other). Atresia is also called Bamyan holes (anus) in the outcome of the disease (for example, scar atresia of the esophagus after chemical burns, atresia of the urinary tract as a result of inflammation).
Symptoms of atresia depend on the location and extent. Forecast serious. Atresia of the aorta and the pulmonary trunk incompatible with life. Treatment of atresia surgery; in some cases the acquired atresia treated conservatively by bagirovym. Cm. also Malformations.

Atresia (atresia; from the Greek. negative prefix a -, and tresis - hole) is the total absence of a lumen or natural holes in the body with the structure of the tube. Atresia may be congenital (aorta, pulmonary artery, larynx, trachea, esophagus, small and large intestines, the anus, the common bile duct, vagina, cervix of the uterus, ureters) and acquired. Congenital atresia occurs in connection with violations of organogenesis, acquired on the grounds of severe inflammation, ending with the development of scars and cicatrices, for example after burns mucous membrane caustic alkalis or acids. In congenital atresia newborn unsustainable and needs surgery. Acquired A. sometimes treated conservatively by bagirovym. The prognosis depends on the location and extent of A., newborns always serious.