hi.i went for my 20 weeks anomaly scan yesterday. it showed prominent lateral ventricles with transverse diameter of 7mm. choroid plexii arenormal in size n symmetrically palced.nuchal fold thickness normal. cisterna magna not enlarged.cerebellar hemisphere and vermis show normal echomorphology. what shud have been the ideal size of ventricles at this stage.will they catchup with growth after 4 weeks. am very concerned