Unilateral mild dilation of fetal lateral ventricle

Sometimes, borderline or minimal dilation of fetal lateral ventricle poses a dilemma for management of the pregnancy. 

In this case the left fetal lateral ventricle appears mildly dilated at 10 to 11 mm.

Usually, the fetus will proceed to full term pregnancy  without issues. Follow up ultrasound is sufficient. If the dilation of the lateral ventricle progresses, then termination is the option. 

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Sonography of fetal brain