DISH (diffuse idiopathic skeletal hyperostosis) in the cervical spine

In DISH (also known as Forestier disease) there is calcification and ossification of ligaments and entheses (the connective tissue between bone and a tendon or ligament) involving the vertebral column. Ossification of the anterior longitudinal ligament is common (and often marked), and may occur in conjunction with ossification of the posterior longitudinal ligament (OPLL). Both are seen in this patient. Note the relative sparing of the intervertebral disks, with disk space height preserved, as well as of the facet joints. The disease occurs in about 10% of the elderly, in which it is most common.

DISH cervical spine
Part of the on-line supplement to Neuroradiology – The Essentials with MR and CT (© 2015)