Dermatopathology: Written Quiz 605rt

Dermatopathology quiz : DS Select one best answer: 1. Seborrheic keratosis: A. Rare lesion in adult man. B. Only in sun-exposed area. C. Has malignant potential. D. “Stuck-on” lesion. E. “Squamous pearl” is commonly seen on microscopy. 2. Junctional nevus: A. Not uncommon in elderly. B. Premalignant. C. Nevus cells have dendrites. D. Never shows mitosis E. Children.. 3. Solar elastosis of dermis, dysplastic keratinocytes, hyperkeratosis: A. Bowen’s disease. B. Basal cell carcinoma. C. Actinic keratosis. D. Seborrheic keratosis E. Verruca vulgaris. 4. 70-year-old white man with a recently enlarging ulcerated 1-cm pigmented lesion of back. A. Seborrheic keratosis. B. Dermal melanocytic nevus C. Pigmented actinic keratosis. D. Melanoma. E. Dysplastic nevus. 5. Dermal cystic lined by keratinizing squamous cells with hair follicles, sebaceous glands, and sweat glands. Cyst contains keratin and hair. A. Epidermal cyst. B. Pilar cyst. C. Steatocystoma. D. Dermoid cyst. E. Hydrocystoma.

6. Most common lesion seen at the base of a cutaneous horn: A. Actinic keratosis. B. Verruca vulgaris C. Squamous cell carcinoma. D. Basal cell carcinoma. E. Seborrheic keratosis 7. A soft skin-colored papule from axilla shows normal squamous epithelium overlying fibroconnective tissue. A. Fibroepithelial polyp. B. Dermal nevus C. Normal skin D. Lipoma. E. Fibroma 8. All related to squamous cell carcinoma except: A. Sun. B. Dysplasic keratinocytes. C. Eddies D. Keratin pearl E. Dermal invasion 9. Bridging of the rete ridges, pleomorphic cells, pleomorphic nuclei, large red nucleoli, no invasion of epidermis or dermis by dysplastic cells. A. Junctional nevus B. Dermal nevus. C. Compound nevus D. Atypical nevus E. Melanoma 10. All of the following are predisposing factors for melanoma except: A. Caucasian from northern European descent. B. Red hair, easy sun burn and freckles at sun exposure C. Affluent D. Constant sun exposure in adult life E. Sun exposure at early life and intermittent sun exposure

Answers: 1. D 2. E 3. C 4. D 5. D 6. A 7. A 8. C 9. D 10. D