Neoplasms of skeletal system
Terms
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- major classes of bone tumors
- bone forming, cartilage forming, fibrous, unknown origin
- the three bone forming tumors
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osteoid osteoma
osteoblastoma
osteosarcoma - cartilage forming tumors
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osteochondroma
endochondroma
chondrosarcoma - osteiod osteoma, descript, histo, radio
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benign bone producing tumor
limited growth potential and less than 2 cm
pain from excess prostaglandin E2
circumscribed nidus of randomly anastomosing bone and osteoid with rich fibrovascular stroma
usually long bones diaphysis - osteoblastoma descript, histo, whatnot
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well circumscribed nidus w/ randomly anastomosing bone and osteoid with rich fibrovascular stroma.
>2 cm
usually in spine, dull achy pain. - osteosarcoma location, radiographically
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at sites of maximal bone growth, 50% at knee, distal femur or proximal tibia.
radio blastic and lytic lesions, may produce codman's triangle - chondroma (endochondroma) location
- small bones of the hands and feet of young males
- chondroma histo, xray
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lobulated or lytic on xray
gross look like cartilage, glistening gray blue to white and lobular
histo appearance of mature hyaline cartilage that may have slightly increased cellularity - osteochondroma wtf is it
- b enign cartilage capped outgrowth attached to underlying skeleton by bony stalk
- chondrosarcoma, wtf is it
- intermedullary malignant neoplasm in which neoplastic produce cartilatge w/out osteoid or bone
- chondrosarcoma age, location,
- older patients, axial skeleton, associated with ollier's disease