Aneurysmal bone cyst

From Libre Pathology
Revision as of 11:06, 29 March 2014 by Michael (talk | contribs) (split out)
Jump to navigation Jump to search

Aneurysmal bone cyst is a very common benign pathology of bone.

  • Abbreviated ABC.
Also see giant cell reparative granuloma (AKA solid aneurysmal bone cyst).

General

Features:[1]

  • Benign.
    • May grow rapidly.
  • Osteolysis -> cystic space -> filled with blood.
  • Relatively common; in children second only to osteosarcoma.[2]

Gross/radiologic

Features:[3]

  • Air-fluid levels (radiology).
  • Usually metaphysis of long bones, but uncommonly the femur.
  • May have an "aggressive" appearance, i.e. erode bone.

Microscopic

Features:[1]

  • Bony trabeculae or osteoid tissue.
  • Osteoclast giant cells.
    • Multi-nucleated giant-cells with round randomly arranged nuclei.
  • Benign spindle cells (fibroblasts) - surround bone/adjacent to the giant cells - important.
  • Blood +/- surrounded by giant cells.

DDx:

Images

www:

See also

References

  1. 1.0 1.1 URL: http://emedicine.medscape.com/article/1254784-overview. Accessed on: 4 February 2011.
  2. van den Berg H, Kroon HM, Slaar A, Hogendoorn P (2008). "Incidence of biopsy-proven bone tumors in children: a report based on the Dutch pathology registration "PALGA"". J Pediatr Orthop 28 (1): 29–35. doi:10.1097/BPO.0b013e3181558cb5. PMID 18157043.
  3. Parashari, UC.; Khanduri, S.; Upadhyay, D.; Bhadury, S.; Singhal, S.. "Radiologic and pathologic correlation of aneurysmal bone cysts at unusual sites.". J Cancer Res Ther 8 (1): 103-5. doi:10.4103/0973-1482.95183. PMID 22531523.