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Non-monomelic synchronous primary multicentric chondrosarcoma: a case report.

Yolanda Hernanz González1, Javier Salamanca, Carlos Resines Erasun

  • 1Department of Orthopaedic Surgery, 12 de Octubre University Hospital, 2 Rafael Salazar Alonso Street, 28007 Madrid, Spain. yolandahernanz@auna.com

Acta Orthopaedica Belgica
|September 13, 2005
PubMed
Summary

This report details a rare case of two synchronous conventional chondrosarcomas in a single patient, arising independently in normal bone. This finding highlights diagnostic challenges, particularly differentiating from metastatic disease.

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Area of Science:

  • Orthopedic Oncology
  • Skeletal Pathology

Background:

  • Chondrosarcomas are malignant tumors arising from cartilage cells.
  • Conventional chondrosarcomas are typically grade 2 or 3 and can arise de novo or from pre-existing lesions.
  • Synchronous presentation of multiple chondrosarcomas in normal bone is exceptionally rare.

Observation:

  • A patient presented with two distinct, histologically confirmed grade 2 conventional chondrosarcomas.
  • Tumors were located in the right proximal femur and right scapula.
  • No evidence of pulmonary or visceral involvement was noted at presentation.

Findings:

  • This represents the first reported case of simultaneous, non-monomelic chondrosarcomas arising in two separate, previously normal bones.
  • Surgical resection of both tumors was performed.

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  • Follow-up of three and a half years showed no local recurrence or distant metastasis.

    • Implications:

    • This case expands the understanding of chondrosarcoma presentation and behavior.
    • Differentiating synchronous chondrosarcomas from metastatic disease is a critical clinical challenge.
    • Further research into the etiology and management of multiple de novo chondrosarcomas is warranted.