2.15 Skin Pathology II

Question 1

cutaneous T cell lymphoma, mushroom like growth, occurs on areas without UV exposure, losions are seen but not felt, erythroderma more severe, neoplastic T cells in lower epidermis

Answer 1

mycosis fungoides

Question 2

localized mast cell collection mostly in kids, scratching the lesion will form a hive (Darier sign), fried egg appearance,

Answer 2

mastocytosis

Question 3

-pedunculated papilloma, fibrovascular core, missing adnexal structures (hair follicles and sweat glands)

Answer 3

skin tag

Question 4

red/brown firm nodule, may be itchy on lower extremity, hemosiderin deposits, CD34-

Answer 4

dermatofibromas

Question 5

bulky, irregular tumor, trunk, malignant and rare but don’t metastasize, DFSP, invade hypodermis, CD34+

Answer 5

dermatofibroma protuberans