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On sonographic evaluation, a single viable intra-uterine fetus is clearly seen. Calvaria and brain tissues were not visualized.
Coronal view of fetal face shows bulging eyes with absence of frontal bones, known as the frog eye sign, which is pathognomonic for anencephaly.
GA corresponds to +/- 34 weeks by measuring femur length (FL).
Associating marked polyhydramnios was also noted, AFI measures about 58 cm.