Normal variant. Does the description refer specifically to the spinal cord or to the vertebral body? The cupids bow appearance that I am aware of refers to the lobulated contour of the vertebral body endplates which resemble a cupids bow. This is a normal appearance and is not related to any pathology.
X-ray finding s. When the disc between the vertebra herniate it have 4 possible way to go up, down, front and back. When it go up it make some changes look like bi-lobed cupis bow configuration it is an x-ry todescibe that condition.