Cephalopagus conjoined twins about 14 weeks gestation!! This is an extremely rare type of conjoined twins. They are fused from the vertex to the umbilicus, and share a common cranium with either one composite face or two faces each situated on the opposite side of a conjoined head. On examination, it was seen that the twins were joined from the head down to thorax with one head, one face, one neck, a single thorax and abdomen (fusion of the liver, heart, and the upper gastrointestinal system), and a single umbilical cord and spine. On the face there were two eyes, one nose and two ears. The precise etiology of conjoined twinning is unknown. The most common explanation is fission of single zygot, or alternatively fusion of two dizygotic or monozygotic embryos in their very early embryonic development between 13 and 15 days after conception. These twins tend to be non-viable.
Hemodynamic stimuli&nonhemodynamic stimuli
