Cloacal exstrophy (OEIS Syndrome) is a rare and complicated condition that affects the lower abdominal wall structures of infants In utero, occurring in 1 out of 200,000 pregnancies and 1 in 400,000 live births.

Cloacal exstrophy, or OEIS syndrome, is a birth defect. A baby may have a stomach opening (omphalocele), exstrophy, spina bifida, split genitals and a missing anus.

Cloacal exstrophy (OEIS syndrome) is a very rare birth defect, affecting 1 in every 250,000 births. Although cloacal exstrophy is a serious condition and requires a series of operations, the long-term outcome is good for many children.

Cloacal exstrophy is also known as OEIS Syndrome because of the four features that are typically found together: Omphalocele: Some of the abdominal organs protrude through an opening in the abdominal muscles in the area of the umbilical cord.

Cloacal exstrophy, or OEIS syndrome, is a birth defect in which part of the abdomen is open, exposing organs like the bladder and intestines on the outside of the body.

OEIS complex, also known as cloacal exstrophy, is the most severe birth defect within the exstrophy-epispadias complex. It is characterized by Omphalocele, Exstrophy, Imperforate anus and Spinal defects.

Cloacal exstrophy (CE) is a severe birth defect wherein much of the abdominal organs (the bladder and intestines) are exposed. It often causes the splitting of the bladder, genitalia, and the anus. It is sometimes called OEIS complex. [2]