Talk:Bone
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Aneurysmal bone cyst
Microscopic description
The sections show cartilage, bone and osteoid with variable mineralization surrounded by fibroblasts, hemosiderin-laden macrophages, and multi-nucleated giant-cells with randomly arranged, round nuclei. Hemosiderin-laden macrophages are seen focally. There is no nuclear atypia or mitotic activity. There is no malignant appearing osteoid.
Final diagnosis
Humerous, right proximal, excision - Aneurysmal bone cyst.
Burnt-out chronic osteomyelitis
GREAT TOE, LEFT, AMPUTATION: - SKIN WITH ULCERATION AND IMPETIGINIZATION. - ATHEROSCLEROSIS, MODERATE-TO-SEVERE. - SOFT TISSUE WITH FIBROSIS AND CHRONIC INFLAMMATION. - BONE AND MILDLY FIBROTIC MARROW SPACE WITH SCATTERED LYMPHOCYTES AND SIDEROPHAGES; NO SIGNIFICANT NUMBERS OF PLASMA CELLS OR NEUTROPHILS APPARENT. - NEGATIVE FOR DYSPLASIA AND NEGATIVE FOR MALIGNANCY.
Osteoporosis
Note:
- There isn't a number for "thin" trabeculae. Anecdotally, I suspect "thin" is 0.15-0.2 mm.
- Crude guess at normal thickness is ~ 0.4 mm. [1]
1. Klintström, E.; Smedby, O.; Moreno, R.; Brismar, TB. (Nov 2013). "Trabecular bone structure parameters from 3D image processing of clinical multi-slice and cone-beam computed tomography data.". Skeletal Radiol. doi:10.1007/s00256-013-1766-5. PMID 24271010.