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M6 13-005
Exam 16: Tumors & Disorders of the Appendages
Term | Definition |
---|---|
Skin tumors | Overgrowths of the skin cells can develop from any layer or its appendages. |
Skin cancer may be | life threatening |
Skin cancer can occur | wherever exposure to the sun was greatest. |
The diagnostic test for tumors of the skin | Skin biopsy of the lesion. A health history and visual inspection support the diagnosis. |
Risk Factors factors associated with cancer | Heredity. Chemicals. Irritants. Diet. Hormones. Immune factors. |
Benign Tumors | Keloids. Anginomas. Verrucae (Wart). Nevus (Mole). |
Keloids | an overgrowth of collagenous scar tissue at the site of a wound of the skin. |
Angioma | develops when a group of blood vessels dilate and form a tumorlike mass |
Verrucae (Wart) | a benign, viral, warty skin lesion with a rough, papillomatous (nipplelike) growth occurring in many forms. |
Nevus (mole) | a pigmented, congenital, skin blemish that is usually benign but may become cancerous |
Malignant Tumors | Basal cell carcinoma. Squamous Cell Carcinoma. Malignant Melanoma. |
Basal cell carcinoma | is one type of skin cancer that arises in the basal cell layer of the epidermis. |
Squamous Cell Carcinoma | arises in the epidermis |
Malignant Melanoma | a cancerous neoplasm in which pigment cells (melanocytes) invade the epidermis, dermis and sometimes the subcutaneous tissue. |
Basal cell carcinoma: Appearance | usually scaly in appearance. It may be a pearly papule with a central crater and waxy, pearly border. |
Squamous Cell Carcinoma: Description |