Tricuspid atresia with pulmonary atresia

Atresia is a condition in which an orifice or passage in the body is (usually abnormally) closed or absent.Examples of atresia include: Aural atresia, a congenital deformity where the ear canal is underdeveloped. Biliary atresia, a condition in newborns in which the common bile duct between the liver and the small intestine is blocked or absent. [Source: Wikipedia ]