Wednesday, April 21, 2010

Japanese Disease

Ossification of Posterior Longitudinal Ligament or OPLL or Japanese Disease.

* MC in mid and lower cervical spine.
* causes Spinal Cord compression.
* MRI is the investigation of choice.. Low signal on all pulse sequences. On gradient echo sequences owing to magnetic susceptibility (Blooming Effect) osteophyte size may be exaggerated resulting in overestimation of canal stenosis.

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