In a recent case of monochorionic diamniotic twinning we observed one twin with acardia, cyclopia, and aprosencephaly, an association not reported previously. In most cases of acardia, the development of tissues in superior regions of the body is disrupted severely, while inferior structures develop
An infant showing an unusual combination of craniofacial abnormalities is described. Synotia, astomia, a rudimentary proboscis, and a central placode in the hairline were observed. Serial sections of the head were examined microscopically. The proboscis contained a mass of striated muscle, but no