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21 Cards in this Set
- Front
- Back
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Who gets rhabdomyosarcomas?
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children
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Who gets undifferentiated pleomorphic sarcomas?
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mid- to late adults
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Where do most sarcomas appear?
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lower extremities then upper extremities
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From what cells do soft tissue tumors come?
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primitive multipotential mesenchymal cells, differentiate during neoplastic transofrmation
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At what size are most soft tissue tumors benign?
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< 5cm
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What kind of tumors come from spindle cells?
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fibrous, fibrohistiocytic, smooth muscle, Schwann cell
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What kind of tumors come from small round blue cells?
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rhabdomyosarcoma, Ewing's/PNET, lympjhoma
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What kind of tumor comes from epithelioid cells?
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epithelioid sarcoma, clear cell sarcoma, vascular tumors
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What kind of tumor comes from adipocytes?
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lipoma vairant or liposarcoma
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What kind of tumor comes from rudimentary vascular spaces?
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angiosarcoma
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What kind of soft tissue tumors are fascicular?
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smooth muscle, fibrosarcoma, fibromatosis
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What kind of soft tissue tumors are biphasic?
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synovial sarcoma, mesothelioma
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What kind of soft tissue tumros are palisading?
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Schwannoma, GIST
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What kind of soft tissue tumors are in rosettes?
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neuroectodermal tumors
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What does it mean if you stain for cytokeratin or EMA?
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carcinoma, synovial sarcoma
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What does it mean if it stains for S-100?
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peripheral nerve sheath tumor, melanoma
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What does it mean if it stains for MyoD1 or myogening?
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rhabdomyosarcoma
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What does it mean if it stains for CD31 or CD34?
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angiosarcoma
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What do you see on electron micro of carcinoma?
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cell junctions
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What sit he marker for Ewing's sarcoma?
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22q12
EWSR1 |
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What is the marker for alveolar rhabdomyosarcoma?
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FKHR at 13q14
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