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Pt has history of leukemia and has painless soft mass in tissue. There is enlargement of lymph nodes noted. What type of mass is present?
Malignant lymphoma
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Pt has painless, fairly well-demarcated, slow growing, firm, encapsulated tumor. It is found in connection with skin. What is it?
Fibroma
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Pt has red-brown in color lesion. It is well circumscribed benign nodule. It is associated with tendon sheath. What is it?
- Giant cell tumor of tendon sheath.
- These lesions occasionally become malignant and treatment is excision with surrounding normal skin, to prevent metastasis.
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35 year old male presents with a slow growing somewhat elevated, slightly protruding structure that is fixed to the skin and some hyperpigmentation. What type of tumor?
Dermatofibrosarcoma protuberans (Darier's tumor).
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Pt has slow growing lobulated, rubbery, firm mass. This lesion tend to metastasize.
Fibrosarcoma
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A man (key word man) has a benign superficial subcutaneous soft tissue mass. The lesion is found in GI tract.
Leiomyoma
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There are two types of smooth muscle origin lesions?
Leiomyoma and Leiomyosarcoma
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Name one skeletal muscle soft tissue mass?
Rhabdomyoma: extrememly rare benign skeletal muscle tumor usually occuring in the tongue, neck muscles, larynx uvula, nasal cavity, axilla, vulva, and heart.
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Name 3 adipose tissue masses
- Lipoma: benign usually painless tumor derived from fat cells.
- Soft, movable, subcutaneous nodule
- Rarely found on the foot.
- Can transform to liposarcoma
- Liposarcoma: slow growing malignant tumor of adipose tissue.
- Pain may be present depending on involvement
- Most commonly seen in upper thigh, buttocks, or back
- More firm than lipoma, less freely moveable
- Treatment may include amputation, chemotherapy, irradiation
- One of the most common soft tissue sarcomas in adults, however it's still about 100 X less common than a benign lipoma.
- Piezogenic papule
- -Benign herniation of subcutaneous fat into the dermal connective tissue
- -Seen most frequently on the lateral and medial aspect of the weight bearing heel.
- -More common in obese persons due to pressure
- -Can be painful and may become necrotic
- -These lesions may give "cobblestone" appearance
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Name 3 nerve tissue soft tissue masses
- Schwannoma:
- benign neoplastic lesion that arises from schwann cells
- The schwannoma tumor group includes; neurilemmomas and neurofibromas
- Neurofibroma
- A type of schwannoma
- when multiple cutaneous lesions are noted with cafe au lait spots the condition is called von recklinghausen's disease.
- More prone to become malignant as compared to neurilemmoma
- Feel rubbery
- Neurilemoma
- -type of schwannoma
- -tend to favor the flexor surfaces
- malignant transformation is extrememly rare
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Name 2 synovial joint masses
- Pigmented Villonodular synovitis:
- -Symptoms usually have been present for a few years and include pain, joint effusion, and hemarthrosis, limited ROM
- -The synovium will appear red-brown in color due to the hemosiderin found in the tissue.
- Synovial Sarcoma
- -highly malignant tumor arising from undifferentiated mesenchymal cells in tendons, tendon sheaths, or joint capsue.
- Most common malignant soft tissue lesion in the foot.
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What is the most common malignant soft tissue lesion in the foot?
- Synovial sarcoma: highly malignant tumor arising from undifferentiated mesenchymal cells in tendons, tendon sheaths, or joint capsule.
- -affects people in their 20's most commonly.
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