Impact of the suspension and restart of the Dutch breast cancer screening program on breast cancer incidence and stage during the COVID-19 pandemic

A.H. Eijkelboom, L. de Munck, M.B.I. Lobbes, C.H. van Gils, J. Wesseling, P.J. Westenend, C.G. Paez, R.M. Pijnappel, H.M. Verkooijen, M.J.M. Broeders, S. Siesling*, NABON COVID-19 Consortium, COVID-and-Cancer-NL Consortium

*Corresponding author for this work

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The COVID-19 pandemic forced the Dutch national breast screening program to a halt in week 12, 2020. In week 26, the breast program was resumed at 40% capacity, which increased to 60% in week 34. We examined the impact of the suspension and restart of the screening program on the incidence of screen-detected and nonscreen-detected breast cancer. We selected women aged 50-74, diagnosed during weeks 2-35 of 2018 (n = 7250), 2019 (n = 7302), or 2020 (n = 5306), from the Netherlands Cancer Registry. Weeks 2-35 were divided in seven periods, based on events occurring at the start of the COVID-19 pandemic. Incidence of screen-detected and non-screen-detected tumors was calculated overall and by age group, cT-stage, and cTNM-stage for each period in 2020, and compared to the incidence in the same period of 2018/2019 (averaged). The incidence of screen-detected tumors decreased during weeks 12-13, reached almost zero during weeks 14-25, and increased during weeks 26-35. Incidence of non-screen-detected tumors decreased to a lesser extent during weeks 12-16. The decrease in incidence was seen in all age groups and mainly occurred for cTis, cT1, DCIS, and stage I tumors. Due to the suspension of the breast cancer screening program, and the restart at reduced capacity, the incidence of screen-detected breast tumors decreased by 67% during weeks 9-35 2020, which equates to about 2000
Original languageEnglish
Article number106602
Number of pages10
JournalPreventive Medicine
Publication statusPublished - 1 Oct 2021


  • COVID-19
  • Breast cancer incidence
  • Breast cancer screening
  • cT-stage
  • Clinical tumor stage

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