title: Calcium pyrophosphate dihydrate deposits in the cervical ligamenta flava causing myeloradiculopathy.
abstract: Three cases of cervical myeloradiculopathy associated with multiple calcified nodules containing identified calcium pyrophosphate dihydrate (CPPD) crystals in the ligamenta flava are described, with a comprehensive review of the 12 cases of this entity reported to date. The disease is characterized by: 1) oval or triangular areas of radiodensity in the posterior aspect of the cervical canal as seen in the lateral x-ray films and laminograms; 2) hemispherical areas of high density located almost symmetrically in the paramedial portion of the posterior spinal canal on computerized tomography scans; and 3) CPPD crystals in the nodules. It occurs independently or in association with cervical spondylosis or ossification of the posterior longitudinal ligament.
mesh_terms: D000368:Aged; D002114:Calcinosis / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D002131:Calcium Pyrophosphate; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D013118:Spinal Cord Diseases / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D013126:Spinal Nerve Roots / Q000000981:diagnostic imaging / Q000601:surgery*
chemical_list: D002131:Calcium Pyrophosphate