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17 Cards in this Set
- Front
- Back
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Kickers for Osteoid Ostoma?
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Nidus of red trabecular bone surrounded by sclerotic bone
Benign Men from 10-25 Femur, Tibia, long bones Diaphysis Night Pain Cut it out and cure it |
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Ewing Sarcoma Kickers?
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Malignant
Infiltrative Extensive Necrosis Small, Round, Blue Cell Tumor of kids and young adults European Ancestry Localized Pain-->soft tissue swelling Femur, Tibia, Humerus DDX osteomyelitis, PNET t(11:22) |
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OSTEOSARCOMA general kickers?
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Codman's Triangle on imaging
Ill-defined, destructive mass Subtypes (intramedullary, intracortical, surface) |
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OSTEOSARCOMA who gets it and where?
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Involves Metaphysis
Second decade Distal Femur, Prox Tibia, Prox humerus Second peak in elderly Secondary in elderly to Paget's, infarcts, osteomyelitis Elderly: axial and flat bones |
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OSTEOSARCOMA
histopath? |
lace-like or haphazard pattern of osteoid
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OSTEOSARCOMA
course? |
Aggressive
Metastasis to lung, liver, bones |
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OSTEOSARCOMA
markers? |
Rb anti-oncogene deletion
SV40 |
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What do Lipomas and Liposarcomas have in common?
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Signet rings
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What is a Lipoma?
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just an unremarkable, encapsulated lesion of lipocytes
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Liposarcoma
location, who gets it, how does it arise? |
Deep tumor
40-60 yrs De novo |
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Key differentiation between lipoma and lipsarcoma?
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Lipoma's don't have Lipoblasts and Liposarcomas do!
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Liposarcoma ch. abnormality?
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12
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RHABDOMYOSARCOMA
location histo |
anywhere except bone
myxoid stroma and cross-striations |
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RHABDOMYOSARCOMA
specific locations based on age? |
young kids: head, neck, GU
adolescents: extremities, sinuses, retroperitoneum |
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RHABDOMYOSARCOMA
prognosis? |
bad bad when it spreads, b/c it goes real diffuse
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CHONDROSARCOMA
who gets it? where? |
30-50 year olds (not kids)
slightly male dominance Pelvis, ribs, scapula, femur, humerus maybe secondary to other diseases |
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CHONDROSARCOMA
metastasis? |
lung and skeleton
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