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Updated: 6/21/2021

Histiocytoma (Benign Fibrous Histiocytoma)

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https://devupload.orthobullets.com/topic/8028/images/Case A - tibia - xray - Parsons_moved.jpg
https://devupload.orthobullets.com/topic/8028/images/Case A - tibia - xray b - Parsons_moved.jpg
https://devupload.orthobullets.com/topic/8028/images/Histoogy B - storiform - Parsons_moved.jpg
https://devupload.orthobullets.com/topic/8028/images/Case C - femur - bone scan - Parsons_moved.gif
https://devupload.orthobullets.com/topic/8028/images/Histoogy C - high power - Parsons_moved.jpg
https://devupload.orthobullets.com/topic/8028/images/Histology C - Parsons_moved.jpg
  • summary
    • Histiocytomas, also known as benign fibrous histiocytomas, are extremely rare, benign histiocytic lesions of bone. Patients typically present with regional pain and swelling. 
    • Diagnosis is made with radiographs that show a characteristic lytic lesion with a sclerotic border and biopsy with histology showing spindle cells and foamy macrophages in storiform pattern.
    • Treatment is usually curettage and bone grafting.
  • Epidemiology
    • Incidence
      • extremely rare
  • presentation
    • Symptoms
      • pain and swelling
  • Imaging
    • Radiographic characteristics
      • lytic lesion with sclerotic border
  • Histology
    • Characteristic findings
      • spindle cells
      • foamy macrophages
      • storiform pattern (helicopter in wheat field)
  • Treatment
    • Operative
      • curettage and bone grafting
  • Prognosis
    • Recurrence rare

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