Fig. 4

Case 4-Dorsal view of a female 3D-CT images of cases 4 and 5. Dorsal view of female diprosopus showing exencephaly and extensive craniorachischisis (a); frontal view of the faciial 3D-CT, showing acrania, osseous spike in between the duplicated skull base, duplication of facial bones, partial defects of median temporal bones and handle-shaped interfacial midline fusion of the median zygomatic processes (b); dorsal view of the fetal skeleton in 3D –CT displaying craniorachischisis, duplication of vertebral bodies down to L5 and splitting of the upper cervical spine (c). Case 5—Frontal view of the face of a male diprosopus terophthalmus with fused orbits, median ear pit and contralateral CLP (d); dorsal full length immage displaying collapse of the skull due to preexisting hydrocephaly and thoracolumbar rachischisis (e); frontal view of the upper spine in 3D-CT showing duplication of vertebral bodies, but not of vertebral arches and single foramen occipitale magnum (f); frontal view of facial 3D-CT presenting duplication of facial bones, defect of the inner temporal bones and narrowing, but no fusion of the zygomatic processes (g)