Anencephaly with incomplete twinning (diprosopus).
A case of diprosopus with anencephaly is presented. It is suggested that such concurrence of neural tube defects and incomplete twinning corroborates the notion that a single pathogenetic mechanism may be common to both neural tube defects and monozygotic twinning.
D000015:Abnormalities, Multiple / Q000175:diagnosis; D009008:Abnormalities, Severe Teratoid / Q000150:complications*; D000757:Anencephaly / Q000150:complications*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D014428:Twins, Conjoined; D014430:Twins, Monozygotic