Diffuse idiopathic skeletal hyperostosis (DISH)

Discussion:

Diffuse Idiopathic skeletal hyperostosis (DISH) is a bone-forming diathesis primarily affecting the spine, with ossification of tendons and ligaments.  Most of us are familiar with the spinal findings; however there are extraspinal manifestations as well such as hyperostosis at ligament attachments in the pelvis, calcaneus, tarsal bones, ulnar olecranon and patella.  Usually these are incidental findings without significant morbidity. 

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