Résumé
L’évaluation de réponse tumorale est fondée sur les modifications du nombre et de la taille de « cibles » mesurables. Les règles de l’Organisation Mondiale de la Santé (OMS), qui définissaient les méthodes de mesure et les critères de réponse ne sont plus adaptées à l’évolution technique de l’imagerie. Les nouveaux critères édités par le Response Evaluation Criteria in Solid Tumors (RECIST) Group restent fondés sur la mesure de la taille des cibles. Ce seul critère de taille doit être discuté à la lumière des nouvelles possibilités de l’imagerie dite fonctionnelle (échographie-Doppler avec produit de contraste, scanner ou IRM dynamiques, imagerie de diffusion, spectroscopie par résonance magnétique, imagerie ciblée, TEP scanner) susceptible de fournir des informations sur la vascularisation, le métabolisme ou la viabilité des tumeurs, paramètres dont les modifications traduisent la réponse au traitement avant la diminution de volume.
Abstract
Tumour response is based on changes in the number and size of measurable tumour “targets”. The World Health Organization (WHO) guidelines defining the method of measurement of solid tumours and response criteria are no longer adapted to technical progress in imaging. New guidelines, updated by the Response Evaluation Criteria in Solid Tumors (RECIST) Group, remain based on measurement of the size of the target lesion. The use of this single criterion of size needs to be discussed in the light of new functional imaging technologies (contrast-enhanced ultrasonography, dynamic CT or MRI, diffusion-weighted MR imaging, magnetic resonance spectroscopy, targeted imaging, PET scanner) able to provide information on tumour vascularization, composition, or viability, modifications of which reflect response to treatment before a reduction in tumour volume can be detected.
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Ollivier, L., Leclère, J. Évolution des critères d’évaluation de la réponse tumorale: apport de l’imagerie fonctionnelle. Oncologie 9, 294–298 (2007). https://doi.org/10.1007/s10269-007-0618-0
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DOI: https://doi.org/10.1007/s10269-007-0618-0