Archives of the AFIP -- RadioGraphics

Figure 3: Osteoid osteoma of the lamina at T-11 in a 17-year-old boy with painful scoliosis. Pain was more intense at night and relieved by salicylates. Panel A Radiograph reveals a subtle lucent area (arrow) in a right articular mass. Panel B Posterior bone scan shows intense uptake of the radionuclide by the nidus (arrow) and scoliosis. Panel C CT scan shows the nidus (large arrowheads) with a small central area of calcification (small arrowhead) and minimal surrounding sclerosis. Panel D Radiograph of the resected specimen shows that the nidus was entirely removed (arrows). Panel E Photograph of the gross specimen reveals the nidus (*) extending to the facet cartilage (arrows). Panel F Photomicrograph (original magnification, X150; hematoxylin-eosin stain) shows the interconnecting trabeculae, background fibrovascular tissue, and minimal surrounding sclerosis.

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