cancer du sein; bilan; imagerie; suivi; métastases; breast cancer; staging; imaging; follow-up; metastases
Abstract :
[en] In our region, repeated tumor staging by radiological procedures aiming to detect relapses and/or metastases from breast cancer is frequently performed. However, these procedures are not recommended by current international guidelines. We retrospectively analyzed the charts from 818 patients with a new diagnosis of breast cancer seen at CHU Liege between 2005 and 2009. We assessed the role of staging procedures at initial diagnosis and during follow-up the first 3 years after the diagnosis of breast cancer. Twenty-six patients presented with metastatic disease at diagnosis and 55 patients developed loco-regional relapses or metastases during follow-up. For asymptomatic patients, imaging procedures only detected tumor metastases or relapse without elevated tumor markers in 9 patients at initial diagnosis and 10 patients during follow-up. The diagnosis of an asymptomatic relapse and/or metastases had no positive impact on progression-free or overall survival. The anatomic extension identified patients at high risk for presenting distant metastases already at the time of initial diagnosis and the biological aggressiveness evaluated by Ki-67 was an important prognostic factor for early relapse. In view of these results, we do not recommend staging and searching for metastatic disease in asymptomatic patients presenting early stage breast cancer with low expression of the Ki-67 at the time of initial diagnosis. We also do not recommend repeated staging and searching for metastases by imaging in asymptomatic patients during routine follow-up. Staging should only be performed if a relapse is suspected during follow-up. [fr] Dans nos régions, des bilans par imagerie sont régulièrement réalisés lors du diagnostic et dans le cadre du suivi d’un cancer du sein. Cependant, cette pratique est contraire aux recommandations internationales. Nous avons évalué l’intérêt d’un bilan d’extension au diagnostic et lors du suivi, jusqu’à 3 ans après le diagnostic, de 818 patients atteints de cancer du sein pris en charge au CHU de Liège entre 2005 et 2009. Vingt-six patients présentaient des métastases au diagnostic et 55 rechutes locorégionales ou systémiques ont été observées. Pour les patients asymptomatiques, l’imagerie seule a identifié la dissémination à distance et/ou la rechute locorégionale chez 9 patients au diagnostic et 10 patients dans le cadre du suivi. La découverte d’une rechute et/ou d’une dissémination métastatique asymptomatique n’a pas eu d’impact favorable sur la survie sans progression ou la survie globale. L’extension anatomique au diagnostic identifie les patients à risque de présenter une maladie directement métastatique tandis que l’agressivité biologique, évaluée par le Ki-67, est un facteur de risque important pour la rechute précoce. Suite aux résultats obtenus, nous déconseillons de réaliser un bilan d’extension à la recherche de métastases au moment du diagnostic pour les cancers du sein asymptomatiques à un stade précoce avec un Ki-67 peu élevé. Nous déconseillons également la réalisation régulière d’un bilan d’extension par imagerie à la recherche de métastases chez les patients asymptomatiques. Un bilan est à réaliser dans le cadre du suivi uniquement si une rechute est suspectée.
Disciplines :
Oncology
Author, co-author :
SCHROEDER, Hélène ; Centre Hospitalier Universitaire de Liège - CHU > Centre d'oncologie
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