2.1.3 Bone and Tumor Pathology I Flashcards
What are some of the tools for evaluating a bone lesion?
H&P, plain films, MRI, CT, and bone scan
Diagnose me.
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Monostatic fibrous dysplasia
What is the size of the nidus in osteoid osteoma?
under 2 cm
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diagnose me.
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Giant cell tumor
What is the reason for pain in osteoid osteoma?
Prostaglandins are being made in the lesion. That is why aspirin is particularly useful in reducing the nighttime pain experienced in these patients.
Name this condition?
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Osteoid osteoma
What is the name for the condition for multiple enchondromas?
Oillier’s dz
What is being shown here on this bone scan of a 10-year old girl with monostatic fibrous dysplasia?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/218/207/118/q_image_thumb.png?1502129288)
B/c the girl is still growing, the areas of the metaphysis are still lighting up b/c of their metabolic activity. In hip, there is assymetric activity which is indicative of an active lesion.
What are the three clinical patterns of fibrous dysplasia?
Monostotic (70%) - early adolescence
Polyostotic (27%)
Polystotic dz, assoc w cafe au lait skin pigmentation and endrocrine abnormalities (McCune-Albright syndrome)
What type of radiological study is good for viewing osteoid osteoma?
CT
Benign cartilage-capped outgrowth that is attached to the skeleton by a bony stalk
Exostosis
What is true about the activity of most tumors in upper extremities?
More active
What is the shepard’s crook deformity?
The bowing of the diaphysis in relation to the head. Doing this because the bone is weak and their is an adductor moment in the hip.
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Id this specifmen
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Osteochondroma