Correlation Engine 2.0
Clear Search sequence regions

  • breast cancer (5)
  • breast tumor (4)
  • cancer (2)
  • diagnosed (2)
  • female (1)
  • help (1)
  • humans (1)
  • mass (1)
  • netherlands (7)
  • stage tumors (2)
  • tumor stage (5)
  • us effect (1)
  • women (5)
  • Sizes of these terms reflect their relevance to your search.

    Comparing the impact of the COVID-19 pandemic on the incidence of newly diagnosed breast tumors and their tumor stage between the Netherlands and Norway will help us understand the effect of differences in governmental and social reactions towards the pandemic. Women newly diagnosed with breast cancer in 2017-2021 were selected from the Netherlands Cancer Registry and the Cancer Registry of Norway. The crude breast cancer incidence rate (tumors per 100,000 women) during the first (March-September 2020), second (October 2020-April 2021), and Delta COVID-19 wave (May-December 2021) was compared with the incidence rate in the corresponding periods in 2017, 2018, and 2019. Incidence rates were stratified by age group, method of detection, and clinical tumor stage. During the first wave breast cancer incidence declined to a larger extent in the Netherlands than in Norway (27.7% vs. 17.2% decrease, respectively). In both countries, incidence decreased in women eligible for screening. In the Netherlands, incidence also decreased in women not eligible for screening. During the second wave an increase in the incidence of stage IV tumors in women aged 50-69 years was seen in the Netherlands. During the Delta wave an increase in overall incidence and incidence of stage I tumors was seen in Norway. Alterations in breast cancer incidence and tumor stage seem related to a combined effect of the suspension of the screening program, health care avoidance due to the severity of the pandemic, and other unknown factors. Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.


    Anouk H Eijkelboom, Linda de Munck, Marthe Larsen, Maarten J Bijlsma, Vivianne C G Tjan-Heijnen, Carla H van Gils, Mireille J M Broeders, Jan F Nygård, Marc B I Lobbes, Charles W Helsper, Ruud M Pijnappel, Luc J A Strobbe, Jelle Wesseling, Solveig Hofvind, Sabine Siesling, NABON-COVID-19 Consortium & The COVID and Cancer Care-NL Consortium. Impact of the COVID-19 pandemic on breast cancer incidence and tumor stage in the Netherlands and Norway: A population-based study. Cancer epidemiology. 2023 Dec;87:102481

    Expand section icon Mesh Tags

    PMID: 37897970

    View Full Text