Fig. 1

Six-day-old female neonate presented with lumbar swelling and hydrocephalus, paraplegic with patulous anus, horse shoe kidney and vertebral anomalies. a Transverse USG showed defective spinous process with neural element passing through the defect and neural placode is not in flush with the skin. b Longitudinal USG showed filum terminale passing through the spinal defect. c Longitudinal USG showed cystic lesion showing CSF and nerve roots within (myelomeningocele). d Axial T2W MRI showed associated renal anomaly (horse shoe kidney, black arrow). e Sagittal T2W MRI showed defective L1 spinous process with all downward posterior components and myelomeningocele passing through the defect (white arrow). Final diagnosis is Myelomeningocele with associated vertebral anomalies (segmental spinal dysgenesis), agreement frequency between ultrasound and MRI findings = 94% (segmental spinal dysgenesis was missed by ultrasound)