Ultrasound - Antenatal scan
Long as well as short axis
There is a single intrauterine fetus with growth corresponding to the period of amenorrhoea. There is a spinal posterior arch defect at the lumbosacral junction region associated with an echogenic lesion in the spinal canal. The lesion shows an extraspinal extension into the subcutaneous fat plane. The overlying skin is intact. The lesion shows calcification at its base. The lesion measures about 4 x 3 x 3 mm. The spinal cord is tethered to the lesion. There is no cord splitting. There is no syrinx cranially. There is no dilatation of the cerebral ventricle. Cisterna magna is normal. Both lower limbs, as well as upper limbs, show normal movements.