Diffuse Idiopathic Skeletal Hyperostosis Causes Artificially Elevated Lumbar Bone Mineral Density Measured by Dual X-ray Absorptiometry |
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Authors: | Jonathan Berk Schwartz MD Marlene Rackson MD |
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Affiliation: | aDepartment of Radiology, Beth Israel Medical Center, New York, NY |
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Abstract: | A 76-yr-old man with bilateral total hip arthroplasties was referred for a baseline bone mineral density (BMD) measurement. The L1-L4 lumbar bone density revealed a density above the upper expected value for a young individual (i.e., T-score > 2.5) with large intervertebral variation, while the forearm study revealed an osteoporotic measurement. Lumbar spine radiographs demonstrated abundant, flowing ossification of the anterior spinal ligament, predominantly at L3, consistent with diffuse idiopathic skeletal hyperostosis, which accounted for the increased BMD. |
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Keywords: | Osteoporosis bone mineral densitometry diffuse idiopathic skeletal hyperostosis |
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