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M6 13-005

Exam 16: Tumors & Disorders of the Appendages

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
Created by: jtzuetrong