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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 |