A patient has a small, red, scaling lesion that is sitting on an elevated base on the forehead. The patient states that the lesion appeared several weeks ago and will not heal. The nurse is concerned that the patient has which type of lesion?
1. Squamous cell carcinoma
2. Melanoma
3. Psoriasis
4. Seborrheic keratosis
1
Rationale 1: Squamous cell carcinoma consists of tumors of the outer epidermis that develop with frequent exposure to the sun. The scaling lesions sit on an elevated base with an irregular border that may itch or be a nonhealing lesion after minor trauma.
Rationale 2: Melanoma appears as a changing or unusual mole with an irregular border, an uneven surface, and a varying size and shape.
Rationale 3: Psoriasis lesions are erythematous papules and plaques with silver-white scales that are sharply demarcated.
Rationale 4: Seborrheic keratosis lesions are warty, dirty yellow to black papules with sharp margins.
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