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17 Cards in this Set
- Front
- Back
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Lipoma
*Most common benign soft tissue tumor |
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Hibroma
*benign tumor of brown fat |
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Liposarcoma
*Malignant tumor of fat, occurs in thigh and retroperitoneum *Arrow points to lipoblast *Can spontaneously de-differentiate |
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What gene is diagnostic for this tumor? |
Myxoid Liposarcoma
*CHOP/TLS fusion gene |
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Leiomyoma
*benign smooth mm tumor *most common in uterus ("fibroids") |
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Stains + for SMA |
Leiomyosarcoma
*Malignant smooth mm tumor *Commonly occur in retroperit. / Intra-ab. * Mitotic count = best prognostic factor |
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Fibrosarcoma
*Malignant CT tumor that's slow-growing in extremities *"Herringbone Pattern" = stubby spindle cells in alternating directions |
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Stains + for Factor XIIIa |
Dermatofibroma
*Benign tumor of fibrous cells in dermis of extremities |
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Malignant Fibrous Histiocytoma
*High-grade pleomorphic sarcoma w/ quick metastasis to lungs *most common sarcoma in adults *"Storiform Pattern" = whorls of spindle cells |
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Taken from mass in head/neck area
Stains + for desmin |
Rhabdomyosarcoma - Embryonal type
*Rhabdo = most common sarcoma in kids and embyronal type is most common rhabdo |
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Grape-like mass protruding from vagina |
Rhabdomyosarcoma - Boytroid type |
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Rhabdomyosarcoma - Alevolar type |
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Strap cell (striated cell in middle) of Rhabdomyosarcoma |
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Stains + for desmin |
Rhabdomyosarcoma - Pleomorphic Type
*only Rhabdo type to occur in adults 45+ |
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Taken from painful mass in knee |
Synovial Sarcoma
*Malignant tumor of unknown origin (NOT synovium!!) *T (x,18) is diagnostuic
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Histo shows CD34+ cells |
Nodular Fasciitis
*Reactive proliferation of fibroblasts secondary to inflammatory process *Resembles Fibrosarcoma *Occurs in subcutis and extends to mm |
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Taken from a mass in abdomen of a women who had a C-section last fall |
(Deep) Fibromatosis
*Reactive proliferation of myofibroblasts secondary to trauma *Resemble MFH on gross, but histo shows normal fibrous tissue *Superficial occur on plantar/palmar surface
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