Yes. If a woman is going to participate in screening, annual screening is especially important for women in their 40s when cancers tend to be more biologically aggressive. Greater breast density also contributes to worse outcomes from screening mammography among women in their 40s [1, 2]. Biennial screening is nearly as effective as annual screening at reducing deaths due to breast cancer among women who are over the age of 50 (or postmenopausal).
References Cited
1. Hendrick RE, Helvie MA, Hardesty LA. Implications of CISNET modeling on number needed to screen and mortality reduction with digital mammography in women 40-49 years old. AJR Am J Roentgenol 2014; 203:1379-1381
2. Bailey SL, Sigal BM, Plevritis SK. A simulation model investigating the impact of tumor volume doubling time and mammographic tumor detectability on screening outcomes in women aged 40-49 years. J Natl Cancer Inst 2010; 102:1263-1271