Ivory vertebrae

The ivory vertebra (also known as ivory vertebra sign) sign refers to the diffuse and homogeneous increase in opacity of a vertebral body that otherwise retains its size and contours, and with no change in the opacity and size of adjacent intervertebral discs.

Pathology

Etiology

The cause for an ivory vertebra depends on the age of the patient .

Pediatric
Adult

Rarely, the ivory vertebra can also be seen in :

A helpful mnemonic is LIMPH.

Radiographic features

Plain radiograph and CT

Plain radiographs and CT will demonstrate diffuse sclerosis of the vertebral body with variable involvement of the posterior vertebral elements.

MRI

MRI demonstrates hypointense signals within the corresponding vertebra which is directly proportional to the degree of sclerosis of the vertebral body.

See also