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Table 1.
The histologic Milgram staging system of intraosseous lipomas compared to the radiologic findings.
| Milgram stage | Histology | Radiology |
|---|---|---|
| 1 | Viable fat cells and ± bony trabeculae | Radiolucent, well defined, expands cortex |
| 2 | Viable fat + some fat necrosis + few dystrophic calcifications | Radiolucent, well defined and central calcifications |
| 3 | Viable fat + dystrophic calcifications + cyst formation + reactive bone formation | More radiodense with thick sclerotic borders |
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