Consequences of DISH. Three of the most common and severe clinical consequences are illustrated through case examples from this study. A, and B, are from the same patient who developed dysphagia and progressive myelopathy from spinal cord compression that ultimately required surgical intervention. C, and D, show a patient with DISH who experienced an unstable 3-column hyperextension injury requiring surgical intervention. DISH, diffuse idiopathic skeletal hyperostosis.