Conjoined Twins Center

Conjoined twins are identical twins. In both types of twins, the embryo is supposed to separate during the first two weeks after conception; however, in conjoined twins the embryo does not separate in two. The types of conjoined twins are based on the location of the fusion, and include thoracopagus or xiphopagus, omphalopagus, craniopagus, parapagus, pygopagus, ischiopagus, and rachipagus or rachiopagus. The possibility of surgery for separation, prognosis, and life expectancy of conjoined twins depend on the type. Read more: Conjoined Twins Article


Pregnancy: Multiple Births, Twins, Triplets, and More See Slideshow

Subscribe to MedicineNet's Pregnancy & Newborns Newsletter

By clicking "Submit," I agree to the MedicineNet Terms and Conditions and Privacy Policy. I also agree to receive emails from MedicineNet and I understand that I may opt out of MedicineNet subscriptions at any time.