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Difference between revisions of "Osteoid osteoma"
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| Caption = Osteoid osteoma. [[H&E stain]]. | | Caption = Osteoid osteoma. [[H&E stain]]. | ||
| Micro = anastomosing bony [[trabeculae]] with variable mineralization, | | Micro = anastomosing bony [[trabeculae]] with variable mineralization, osteoblast rimming, no nuclear atypia of osteocytes | ||
| Subtypes = | | Subtypes = | ||
| LMDDx = [[osteoblastoma]], [[osteosarcoma]] | | LMDDx = [[osteoblastoma]], [[osteosarcoma]] | ||
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**Variable mineralization. | **Variable mineralization. | ||
***Mineralization (calcium '''p'''hosphate) = '''p'''urple on [[H&E stain]]. | ***Mineralization (calcium '''p'''hosphate) = '''p'''urple on [[H&E stain]]. | ||
** | **Osteoblast rimming. | ||
***Cells line-up at edge of bone. | ***Cells line-up at edge of bone. | ||