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Recurrent aneurysmal fibrous histiocytoma
  1. K M Sheehan1,
  2. M B Leader3,
  3. S Sexton2,
  4. F Cunningham2,
  5. E Leen1
  1. 1Department of Pathology, James Connolly Memorial Hospital, Dublin 15, Ireland
  2. 2Department of Surgery, Our Lady’s Hospital, Navan, County Meath, Ireland
  3. 3Department of Pathology, Beaumont Hospital, Dublin 9, Ireland
  1. Correspondence to:
 Dr K M Sheehan
 Department of Pathology, James Connolly Memorial Hospital, Blanchardstown, Dublin 15, Ireland;


Aneurysmal fibrous histiocytoma is a rare variant of cutaneous fibrous histiocytoma that results from blood vessel proliferation and haemorrhage into a fibrous histiocytoma. The resulting lesion has a very different clinical appearance, hence the potential confusion with other skin lesions. This report describes the case of a 48 year old woman with a recurrent fibrous histiocytoma with prominent vasculature, which over a three year period recurred on two occasions, showing more progressive features of the aneurysmal variant. In addition, squamous lined cysts were present within this tumour, a finding that has not been described previously. The histological features of this rare lesion and the importance of the differential diagnosis from other similar appearing malignant lesions will be discussed.

  • aneurysmal
  • dermatopathology
  • fibrous histiocytoma
  • squamous metaplasis

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