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Chapter: Medicine and surgery: Dermatology and soft tissues

Dermatofibromas - Skin and soft tissue lumps

A dermatofibroma is a cutaneous nodule containing macrophages or histiocytes. - Definition, Incidence, Aetiology, Pathophysiology, Clinical features, Complications, Investigations, Management, Prognosis.

Dermatofibromas

 

Definition

 

A dermatofibroma is a cutaneous nodule containing macrophages or histiocytes.

 

Incidence

 

Common.

 

Age

 

Can occur at any age, more common in adults.

 

Sex

 

4F : 1M

 

Aetiology/pathophysiology

 

Historically dermatofibromas have been associated with trauma or insect bites, although the cause is unknown.

 

Clinical features

 

Lesions occur most commonly on the lower limbs. They are solitary firm elevated nodules with pigmentation of the overlying skin. Although classically asymptomatic they may cause itching or pain.

 

Management

 

Dermatofibromas are removed only if troublesome or if there is diagnostic uncertainty.

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