When a dent is found on the lower back, it needs to be ascertained whether this "dimple" , a simple tuft of hair or a larger more serious "swelling" has any underlying association, secondly whether the lower limbs
are moving normally and lastly whether the baby has an intact sphincter mechanism that controls the motions.
The baby requires an MRI
evaluation of the lower back to ascertain the extent of involvement. It can be done at the earliest possible.