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종결 Case No. 239 2011-05-01~2011-05-31

출제자 : 최승홍 Hit : 420

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Period	2011-05-01~2011-05-31
Diagnosis
Clinical information	M/32 Left forehead mass (20 YA)
Discussion	Answer: Fibrous dysplasia 1. Benign medullary fibro-osseous lesion 2. Jaw: most common site -Long bone (F) -Rib and skull (M) -35% of monostotic form involve head 3. Gross; grey and firm-to-gritty 4. Microscopy - Fibrous and osseous components - Fibrous: bland spindle cells - Osseous: irregular curvilinear trabeculae of woven bone and no osteoblastic rimming 5. Prognosis: Good, rare malignant transformation
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