Thirty-five-week fetus; prenatal ultrasound revealed sever left ventricular dilatation. SSFSE T2WIs coronal, axial planes a, b revealed enlarged left cerebral hemisphere, with dilated left lateral ventricle (reaching 30 mm) that shows colpocephaly. Small right cerebral hemisphere with attenuated right lateral ventricle. Sagittal and axial images at the frontal level c, d showed herniating brain parenchyma seen protruding through frontal cortical defect measures 2 cm (arrow) and extends antero-inferiorly between the eye globes that show mild hypertelorism (IOD = 2.7 cm). No CSF signal seen surrounding the lesion. The corpus callosum could not be completely identified. MRI diagnosis: Left hemimegalencephaly with sever ipsilateral ventriculomegaly and frontal encephalocele as well as CC dysgenesis. Recommendation: Termination of pregnancy.