Are Small Breast Cancers Good because They Are Small or Small because They Are Good ?
Menée à partir des données des registres américains des cancers portant sur 585 609 patientes atteintes d'un cancer invasif du sein diagnostiqué entre 2001 et 2013 (âge : 40 ans ou plus), cette étude met en évidence le caractère peu agressif de la majorité des petites tumeurs détectées par mammographie
The recent article by Welch et al. in the Journal showed clearly that since the adoption of widespread screening mammography, small breast cancers have increased in incidence over three times more than large cancers have decreased. This implies that many small cancers are not destined to progress to large cancers; instead, their detection results in overdiagnosis. The purpose of our study was to characterize groups of tumors that are likely to contain a large portion of overdiagnosed cancers and to explain the mechanism that may have led to their overdiagnosis.
New England Journal of Medicine , résumé, 2017