Dermatofibroma

Question 1

what are dermatofibromas?

Answer 1

common benign fibrous skin lesions

Question 2

what is the pathophysiology of dermatofibromas?

Answer 2

• caused by abnormal growth of dermal dendritic histiocyte cells
• often following a precipitating injury

Question 3

what areas of the body are dermatofibromas typically located?

Answer 3

arms and legs

Question 4

what are the cutaneous features of dermatofibroma?

Answer 4

• solitary firm papule or nodule, typically on a limb
• typically around 5-10mm in size
• overlying skin dimples on pinching the lesion