title: Atypical fibroxanthoma
text: # Atypical fibroxanthoma
  
  Atypical fibroxanthoma of the skin is a low-grade malignancy related to malignant fibrous histiocytoma, which it resembles $histologically.^{:613}$
  
  ## Diagnosis
  
  ### Differential diagnoses
  
  * Squamous cell carcinoma
  * Malignant fibrous histiocytoma
  
  ## Treatment
  
  Surgical excision with clear margins.
  
  ## Epidemiology
  
  It occurs most commonly on the skin of sun-exposed, elderly patients. The majority of tumours are on the scalp, face, ears and upper limbs, but less commonly the tumour occurs on the limbs and trunk when there is a lack of association with sun exposure in younger individuals. The condition has also been noted in organ transplant recipients who may be in a state of immunosuppression. It has been reported that there is a predominance in men (70% men versus 30% women).
  
  