Longitudinal (A) and transverse (B)
ultrasound images of the lower back show a flat lesion (arrows) without an
overlying fluid-filled sac and the neural placode (arrowhead) tethered to the
level of the lower back defect. Transverse (C) and sagittal (D)
single-shot fast spin echo (SSFSE) T2-weighted images show a flat defect
(arrows) with the neural placode (arrowhead) tethered to the level of the
defect and not protruding beyond it, with no overlying sac.
SSFSE: single-shot fast spin echo; TRV: transverse.
