Dicephalic parapagus – tribrachius – A case study.

Background: Conjoined twinning is the most fascinating condition that affects human being as well as animals1,2,3. Their images have been found in cave drawings and carvings many centuries back. Like all monozygotic twins, conjoined twins are always of same sex. It is a fairly rare occurrence, exact statistics are not known, but are estimated to be 1 in 200,000 live births4 with a higher incidence in India and Africa. It is estimated that about 70 percent of conjoined twins are females. Approximately 40 to 60 percent of conjoined twins are stillborn, and about 35 percent survive only one day. The overall survival rate of conjoined twins is between 5 to 25 percent.