Histopathological examination of an 8-week-old human cyclopic fetus revealed holoprosencephaly, synophthalmia, and malformed midfacial features. The telencephalon was undivided and projected a single median optic stalk partially subdivided into optic vesicles contained in a single orbit. Aberrant
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