Dermatofibroma

Question 1

Define dermatofibroma

Answer 1

Slow-growing benign fibrous skin lesion aka histiocytoma

Question 2

Aetiology and risk factors of dermatofibromas

Answer 2

Proliferation of fibroblasts and dermal dendritic histiocyte cells

Triggered by trauma
RF: HIV | SLE | female | adults

Question 3

Symptoms and signs of dermatofibroma

Answer 3

Skin lesion:
Firm
Raised
<1cm
Variable coloration, often brown/red-brown
Dimple/centra depression when squeezes or ping (Dimple sign)
Asymptomatic or mild tenderness upon pressure
Slow growth
Arms and legs

Question 4

Management for dermatofibromas

Answer 4

Observation: Many dermatofibromas are asymptomatic and require no treatment unless they become bothersome or cosmetically undesirable
Surgical Excision: If necessary for cosmetic or symptomatic reasons, surgical removal of the lesion is a viable option. This is often performed by a dermatologist or dermatologic surgeon
Cryotherapy: Freezing the dermatofibroma with liquid nitrogen is another option for removal
Laser Therapy: Some dermatofibromas may be treated with laser therapy to minimize scarring