Para el estudio, investigadores del Fred Hutchinson Cancer Research Center, de Seattle (Estados Unidos) seleccionaron un grupo de más de 266.000 mujeres trabajadoras en una fábrica de Shangai para que se realizaran este tipo de autoexploración. Las mujeres que aprendieron a hacerse el examen recibían recordatorios de someterse a sesiones de autoexamen cada mes y a supervisión de especialistas cada 6 meses durante 5 años.
Se seleccionó también un grupo de control que no recibió información de ninguna clase. Al cabo de entre 10 y 11 años de seguimiento, no se encontraron diferencias en los índices de mortalidad entre el grupo que se sometió al autoexamen de mamas y el grupo de control.
Sin embargo, esta práctica sí que aumentaba el índice de biopsias benignas. Las evidencias de estudios de observación no han sido coherentes a este respecto y, ante esto, las autoridades sanitarias no se pronuncian a favor o en contra de enseñar a las mujeres a que se realicen ellas mismas su propio examen.
Webs Relacionadas
Fred Hutchinson Cancer Research Center
http://www.fhcrc.org/
Journal of the National Cancer Institute
http://jncicancerspectrum.oupjournals.org/
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