Lemon Sign: Characteristically see with spina bifida. It has been seen in a variety of conditions such as encephalocele, dandy-walker malformation with encephaloceles, thanatophoric dysplasia, cystic hygroma, diaphragmatic hernia, agenesis of the corpus callosum, fetal hydronephrosis, and umbilical vein varix and two-vessel cord . Seen before 24 weeks.
Answered 12/10/2013
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