title: Radiologic findings of screen-detected cancers in an organized population-based screening mammography program in Turkey.
abstract: OBJECTIVE
  Bahçeşehir Breast Cancer Screening Program is a population based organized screening program in Turkey, where asymptomatic women aged 40-69 years are screened biannually. In this prospective study, we aimed to determine the mammographic findings of screen-detected cancers and discuss the efficacy of breast cancer screening in a developing country.
  
  
  METHODS
  A total of 6912 women were screened in three rounds. The radiologic findings were grouped as mass, focal asymmetry, calcification, and architectural distortion. Masses were classified according to shape, border, and density. Calcifications were grouped according to morphology and distribution. Cancers were grouped according to the clinical stage.
  
  
  RESULTS
  Seventy cancers were detected with an incidence of 4.8/1000. Two cancers were detected in other centers and three were not visualized mammographically. Mammographic presentations of the remaining 65 cancers were mass (47.7%, n=31), calcification (30.8%, n=20), focal asymmetry (16.9%, n=11), architectural distortion (3.1%, n=2), and skin thickening (1.5%, n=1). The numbers of stage 0, 1, 2, 3, and 4 cancers were 13 (20.0%), 34 (52.3%), 14 (21.5%), 3 (4.6%), and 1 (1.5%), respectively. The numbers of interval and missed cancers were 5 (7.4%) and 7 (10.3%), respectively.
  
  
  CONCLUSIONS
  A high incidence of early breast cancer has been detected. The incidence of missed and interval cancers did not show major differences from western screening trials. We believe that this study will pioneer implementation of efficient population-based mammographic screenings in developing countries.
authors.affiliation: Department of Radiology, Kanuni Sultan Süleyman Training and Research Hospital, İstanbul, Turkey. cennetsahin2@hotmail.com.
authors.forename: Arda
authors.initials: A
authors.lastname: Kayhan
authors.forename: Erkin
authors.initials: E
authors.lastname: Arıbal
authors.forename: Cennet
authors.initials: C
authors.lastname: Şahin
authors.forename: Ömür Can
authors.initials: ÖC
authors.lastname: Taşçı
authors.forename: Sibel
authors.initials: S
authors.lastname: Özkan Gürdal
authors.forename: Enis
authors.initials: E
authors.lastname: Öztürk
authors.forename: Hayat Halide
authors.initials: HH
authors.lastname: Hatipoğlu
authors.forename: Nilüfer
authors.initials: N
authors.lastname: Özaydın
authors.forename: Neslihan
authors.initials: N
authors.lastname: Cabioğlu
authors.forename: Beyza
authors.initials: B
authors.lastname: Özçınar
authors.forename: Vahit
authors.initials: V
authors.lastname: Özmen
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000453:epidemiology* / Q000473:pathology; D003906:Developing Countries; D055088:Early Detection of Cancer; D005260:Female; D006801:Humans; D015994:Incidence; D008327:Mammography / Q000379:methods*; D008403:Mass Screening; D008875:Middle Aged; D011446:Prospective Studies; D014421:Turkey / Q000453:epidemiology