Prenatal Sonographic Image of Sirenomelia with Anencephaly and Craniorachischisis Totalis

Figure 1

Two-dimensional ultrasound images at 17 weeks of gestation. (1a) The fetus demonstrating typical features of anencephaly (“Mickey Mouse” sign; white arrows). The calvarium is absent, and the brain is “floating” in the amniotic fluid. (1b) Absence of vertebral posterior elements with splaying of the lamina at the thoracic level (white arrowhead). (1c) The lower limbs appeared to be fused together in fixed extension with two femora and two tibiae (white dashed arrows).

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(b)

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