Summary
Complete removal of the tumour without leaving microscopic disease is vital in the management of bone sarcomas. Magnetic resonance imaging now seems to be the best method of depicting the changes produced by the tumour within the bone and surrounding soft tissues. In order to define its reliability, five cases of primary bone sarcomas (Ewing's sarcoma, osteosarcoma, chondrosarcoma) are described where radiographs, bone scans and magnetic resonance images are directly compared to the pathological findings after resection. We conclude that surgical margins should be redefined with respect to the extent and borders of the tumour as depicted by magnetic resonance imaging. This will allow improvement in salvage procedures, but further experience is needed so as not to jeopardise the prognosis by incomplete removal of the tumour.
Résumé
Dans le traitement des sarcomes osseux, l'ablation absolument complète de la tumeur est d'une importance vitale. Actuellement l'imagerie par résonance magnétique semble la méthode de choix pour la détermination des lésions osseuses et de l'invasion des tissus avoisinants. Afin de juger de son utilité, cinq cas de sarcomes osseux (sarcome d'Ewing, ostéosarcome, chondrosarcome) sont décrits pour lesquels la radiographie conventionnelle, la scintigraphie osseuse et l'imagerie par résonance magnétique sont directement comparées aux pièces de résection. Nous enconcluons que les limites de la résection devraient être redéfinies en fonction de l'examen magnétique. Cela permettra d'effectuer des interventions moins radicales; mais une plus longue expérience est encore nécessaire afin de pas aggraver le pronostic des patients par une excision incomplète de la tumeur.
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Exner, G.U., von Hochstetter, A.R., Augustiny, N. et al. Magnetic resonance imaging in malignant bone tumours. International Orthopaedics 14, 49–55 (1990). https://doi.org/10.1007/BF00183365
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DOI: https://doi.org/10.1007/BF00183365