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Neoplasms of skeletal system


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major classes of bone tumors
bone forming, cartilage forming, fibrous, unknown origin
the three bone forming tumors
osteoid osteoma
cartilage forming tumors
osteiod osteoma, descript, histo, radio
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
well circumscribed nidus w/ randomly anastomosing bone and osteoid with rich fibrovascular stroma.
>2 cm
usually in spine, dull achy pain.
osteosarcoma location, radiographically
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
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

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