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(→Microscopic: +OGCO) |
(→Aneurysmal bone cyst: more) |
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*Osteolysis -> cystic space -> filled with blood. | *Osteolysis -> cystic space -> filled with blood. | ||
*Relatively common; in children second only to osteosarcoma.<ref>{{cite journal |author=van den Berg H, Kroon HM, Slaar A, Hogendoorn P |title=Incidence of biopsy-proven bone tumors in children: a report based on the Dutch pathology registration "PALGA" |journal=J Pediatr Orthop |volume=28 |issue=1 |pages=29–35 |year=2008 |pmid=18157043 |doi=10.1097/BPO.0b013e3181558cb5 |url=}}</ref> | *Relatively common; in children second only to osteosarcoma.<ref>{{cite journal |author=van den Berg H, Kroon HM, Slaar A, Hogendoorn P |title=Incidence of biopsy-proven bone tumors in children: a report based on the Dutch pathology registration "PALGA" |journal=J Pediatr Orthop |volume=28 |issue=1 |pages=29–35 |year=2008 |pmid=18157043 |doi=10.1097/BPO.0b013e3181558cb5 |url=}}</ref> | ||
===Gross/radiologic=== | |||
Features:<ref name=pmid22531523>{{Cite journal | last1 = Parashari | first1 = UC. | last2 = Khanduri | first2 = S. | last3 = Upadhyay | first3 = D. | last4 = Bhadury | first4 = S. | last5 = Singhal | first5 = S. | title = Radiologic and pathologic correlation of aneurysmal bone cysts at unusual sites. | journal = J Cancer Res Ther | volume = 8 | issue = 1 | pages = 103-5 | month = | year = | doi = 10.4103/0973-1482.95183 | PMID = 22531523 }}</ref> | |||
*Air-fluid levels (radiology). | |||
*Usually metaphysis of long bones, but uncommonly the femur. | |||
===Microscopic=== | ===Microscopic=== |
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