Gnatho-thoracopagus conjoined twins with near di-symmetry: a case report of an unusual form of conjoined twinning.

The term gnatho-thoracopagus was used previously to describe a remote case of conjoined twins with union involving the mandible. Few reported cases of this type of union exist in the literature. A case of ventrally conjoined twins, with union involving the mandible and near di-symmetry, is presented here and compared with similar previously reported cases. The presented case represents an example of prosopo-thoracopagus, an intermediate between cephalopagus and thoracopagus conjoined twins, although this case does have unique variations.