Term
| What are the common fibrous growths |
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Definition
Fibroma: Dematofibroma, Recurrant Infantile Digital Fibroma, Fibroma Molle
Fibromatosis(Desmoid Tumors)
Dermatos Fibrosarcoma protuberans
Fibrosarcoma
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Term
| Which fibromatous lesions have a high recurrance rate? |
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Definition
Fibrosarcoma
Fibromatosis
Recurrent Infantile Digital Fibroma |
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Term
| What fibrous growths exhibit a storiform |
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Definition
Pleomorphic Fibrous Histiocytoma
Dermatos Fibrosarcoma protuberans
Dermatofibroma |
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Term
| What is the histology of a fibrosarcoma and its most likely site |
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Definition
Herringbone Pattern
Deep CT in the limb of an adult |
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Term
| What is the most common soft tissue tumor |
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Definition
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Term
| What are the different types of lipomas and key points of each |
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Definition
Infiltrating: infiltrate muscle, Thigh, Shoulder
Spindle Cell: head and neck of elder Men
Pleomorphic: Atypical Nuclei "Floret Cells"
Angiolipoma: Pain, with microthrombi
Lipoblastoma: myxoid, affecting children
Hibernoma: Brown Fat |
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Term
| Most common sites for lipomas |
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Definition
| neck, shoulder, arm, and trunk |
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Term
| What are the different types of Liposarcoma and which is the most common and which has the best prognosis |
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Definition
Well Diferentiated: Lipoma-Like or Sclerosing
Myxoid: best prognosis, most common, Chicken wire vessels (Plexiform)
Round Cell
Pleomorphic: Giant cells, Lipoblasts, spindle |
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Term
| What histology distinguishes a malignant Pleomorphic Fibrous Histiocytoma from a Dermatos Fibosarcoma Protuberans and from the benign form of the Pleomorphic Fibrous histiocytoma? |
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Definition
Pleomorphic Fibrous Histiocytoma: Storiform pattern with fibroblastic and histiocytic cells with tumor giant cells
Dermatos Fibrosarcoma Protuberans lacks Giant cells
The benign form lacks a storiform pattern |
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Term
| What are the characteristics of a leiomyoma |
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Definition
Able to be Shelled-Out
Subcutaneous are Painful
Some are Vascular or Epithelioid
Spindle Cells with blunt nuclear ends |
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Term
| What is more common leiomyoma or leiomyosarcoma and what characteristics are more indicative of malignancy |
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Definition
Leiomyoma is more common
Necrosis/Hemorrhage
Hypercellular
Pleomorphic |
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Term
| What is the most common soft tissue tumor in children? |
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Definition
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Term
| What disease is rhabdomyoma associated with |
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Definition
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Term
| What are the different types of Rhabdomyosarcoma, their age group and common locations |
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Definition
Embryonal(<5 yrs old)
Sarcoma botyroides(grape like) under Mucosal membrane, Head, Neck, UGT, Biliary, Retroperitoneum
Alveolar 10-25 yrs old, Extremities
Pleomorphic Adults
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Term
| What is an hemangioma and where is it likely to be found |
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Definition
| Vessel tumor present at birth in the head or neck |
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Term
| What are the malignant vascular tumors and what are key characteristics of each |
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Definition
Angiosarcoma- head and Neck of Elderly
Lympangiosarcoma-Arise in long standing lymphedema(Stewart-Treves Syndrome= Lympangiosarcoma after mastectomy)
Karposi's Sarcoma- Slit like vascular space containing erythrocytes from herpes virus seen in AIDS patients |
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Term
| Decribe the appearance of each of the fibrous tumors |
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Definition
Dermatofibroma: Redish-Brown,Storiform, Capillaries, Histiocytes
RecurrantIDF: Subcut and dermis
Fibroma Molle: Mature Fibrous and Fat Tissue
Fibromatosis: Local invasion, abundant collagen
DermatosFSP: Polypoid, Storiform, Subcut
Fibrosarcoma: Herringbone |
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Term
| What syndromes are associated with Multiple Lipomas? |
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Definition
Neurofibromatosis
Multiple Endocrine Adenoma Syndrome |
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Term
| What patient and what location does a synovial sarcoma typically present in? |
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Definition
Young Adult
Ankle or Knee |
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