dermatofibroma

Question 1

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what is a dermatofibroma

Answer 1

benign fibrous nodule usually found on the skin of the lower legs.

A dermatofibroma is also called a cutaneous fibrous histiocytoma.

Question 2

aetiology of dermatofibroma

Answer 2

either neoplasm or reactive process

attributed to minor trauma

multiple in HIV, immunosuppression, autoimmune

Question 3

clinical features of dermatofibroma

Answer 3

7-10mm
tethered to skin, mobile over subcut tissue
overlying skin dimples on pinching the lesion
pink/light brown in white skin, dark brown in dark skin
sometimes painful, tender, itchy

Question 4

dx of dermatomyofibroma

Answer 4

dermoscope - central white area surrounded by faint pigment network
excision biopsy

Question 5

rx of dermatomyofibroma

Answer 5

reassurance
if nuisance - excision

recurrance common