Overdiagnosis of Invasive Breast Cancer due to Mammography Screening
Authors: Tor Haldorsen, Steinar Tretli, Giske Ursin
Journal: Annals of Internal Medicine (2012)

Letters7 August 2012Overdiagnosis of Invasive Breast Cancer due to Mammography ScreeningTor Haldorsen, MSc, Steinar Tretli, PhD, and Giske Ursin, MD, PhDTor Haldorsen, MScFrom Cancer Registry of Norway, N-0304 Oslo, Norway.Search for more papers by this author, Steinar Tretli, PhDFrom Cancer Registry of Norway, N-0304 Oslo, Norway.Search for more papers by this author, and Giske Ursin, MD, PhDFrom Cancer Registry of Norway, N-0304 Oslo, Norway.Search for more papers by this authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-157-3-201208070-00023 SectionsAboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail TO THE EDITOR:We believe that Kalager and colleagues (1) give an exaggerated picture of overdiagnosis in the Norwegian Breast Cancer Screening Program. The main issue is whether excess incidence during the prevalent and subsequent screening periods (aged 50 to 69 years in Norway) is compensated by the deficit in incidence after screening (2). The estimation of overdiagnosis in approach 1 assumes that the “current screening group” contains observations during (aged 50 to 69 years) and after (aged 70 to 79 years) screening; however, this is not the case. Even in region I, where screening first started, only 37% of ...References1. Kalager M, Adami HO, Bretthauer M, Tamimi RM. Overdiagnosis of invasive breast cancer due to mammography screening: results from the Norwegian screening program. Ann Intern Med. 2012;156:491-9. [PMID: 22473436] LinkGoogle Scholar2. Boer R, Warmerdam P, de Koning H, van Oortmarssen G. Extra incidence caused by mammographic screening [Letter]. Lancet. 1994;343:979. [PMID: 7909035] CrossrefMedlineGoogle Scholar Author, Article, and Disclosure InformationAuthors: Tor Haldorsen, MSc; Steinar Tretli, PhD; Giske Ursin, MD, PhDAffiliations: From Cancer Registry of Norway, N-0304 Oslo, Norway.Disclosures: None disclosed. PreviousarticleNextarticle Advertisement FiguresReferencesRelatedDetailsSee AlsoOverdiagnosis of Invasive Breast Cancer Due to Mammography Screening: Results From the Norwegian Screening Program Mette Kalager , Hans-Olov Adami , Michael Bretthauer , and Rulla M. Tamimi Overdiagnosis of Invasive Breast Cancer due to Mammography Screening Per-Henrik Zahl Overdiagnosis of Invasive Breast Cancer due to Mammography Screening Mette Kalager , Hans-Olov Adami , Michael Bretthauer , and Rulla M. Tamimi Overdiagnosis of Invasive Breast Cancer due to Mammography Screening Ragnhild Sørum Falk , Solveig Hofvind , and Per Skaane Overdiagnosis of Invasive Breast Cancer due to Mammography Screening Karsten J. Jørgensen Metrics Cited byHvorfor er resultater fra organisert mammografiscreening så vanskelig å tolke?Grenzen des MammographiescreeningsOverdiagnosis among women attending a population‐based mammography screening programOrganisert mammografiscreening - flere fordeler enn ulemper 7 August 2012Volume 157, Issue 3Page: 220KeywordsBirthBreast cancerBreast cancer screeningCancer screeningConflicts of interestMammography ePublished: 7 August 2012 Issue Published: 7 August 2012 Copyright & PermissionsCopyright © 2012 by American College of Physicians. All Rights Reserved.PDF downloadLoading ...