Risk factors include excessive exposure to sunlight. tobacco, arsenic, immunosuppression defective DNA repair mechanisms, exposure to tars and ionizing radiation. Symptoms; small, red, ulcerating nodule on sun-exposed surfaces. Treatment, surgical excision
Basal Cell Carcinoma
Risk factors; chronic exposure to sunlight, fair skin, immunosuppression, and defective DNA repair mechanisms. Symptoms; pearly, telangiectatic papule occurring on sun exposed areas, which may ulcerate or bleed. Treatment; surgical excision.
Associated with excessive exposure to sunlight, genetic predisposition, immunosuppression and fair skin. Symptoms; variation in pigmentation, size, and border in pigmented lesion. May be pruritic (itchy). Treatment surgical excision along with regional lymph node dissection, chemotherapy.