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Solid variant of aneurysmal bone cyst

F Bertoni1, P Bacchini, R Capanna

  • 1Ospedale Malpighi, Bologna, Italy.

Cancer
|February 1, 1993
PubMed
Summary
This summary is machine-generated.

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Solid aneurysmal bone cysts (ABC) present with specific microscopic features and can be mistaken for malignant tumors. Surgical excision is effective, with no recurrences observed in a mean follow-up of 59 months.

Area of Science:

  • Orthopedic pathology
  • Bone tumors
  • Skeletal radiology

Background:

  • Solid aneurysmal bone cysts (ABC) are rare bone lesions.
  • They can exhibit features mimicking malignant tumors.
  • Microscopic examination reveals fibrous proliferation, giant cells, and immature bone.

Purpose of the Study:

  • To describe the clinicopathologic features of solid aneurysmal bone cysts.
  • To evaluate treatment outcomes and recurrence rates.

Main Methods:

  • Retrospective review of 15 solid aneurysmal bone cyst cases from Rizzoli Institute files.
  • Analysis of gross, histologic, and radiographic findings.
  • Surgical treatment: intralesional excision (curettage) or marginal resection.

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Main Results:

  • 60% of patients were female.
  • Metaphysis was the most common location in long bones.
  • Radiographic appearance was often non-specific, with some lesions appearing aggressive.
  • Surgical treatment was effective in controlling the lesion.
  • No recurrence was detected after a mean follow-up of 59 months.

Conclusions:

  • Solid aneurysmal bone cysts are pseudosarcomatous hyperplastic lesions.
  • Benign-appearing spindle cells with high proliferative activity can be mistaken for malignancy.
  • Surgical management provides effective local control without recurrence.