MONDO_0009774 (cloacal exstrophy) is a major birth defect representing the severe end of the spectrum of the exstrophy-epispadias complex (EEC) characterized by omphalocele, exstrophy, imperforate anus and spinal defects (also referred to as the OEIS complex), often associated with other malformations. Also known as: cloacal exstrophy (disease), omphalocele-cloacal exstrophy-imperforate anus-spinal defect syndrome.