Abstract
Trisomy 22 (47, XY, +22) was found at 17 weeks gestation in one fetus of a twin gestation. The karyotypes of both parents and of the other twin were normal. Abnormal prenatal findings included maternal pre-eclampsia, fetal growth retardation, and progressive intracranial sonolucency of the trisomic fetus. Delivery by cesarean section at 36 weeks gestation yielded a normal healthy female weighing 2,822 grams and a markedly macerated dysmorphic male weighing 642 grams. Holoprosencephaly was found in the trisomic fetus, an unusual feature in trisomy 22. Additional findings in this case are compared to other findings in the literature.
Published Version
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