Breast Cancer Research and Treatment

, Volume 138, Issue 3, pp 879–887

Diagnostic imaging and biopsy pathways following abnormal screen-film and digital screening mammography

  • Rebecca A. Hubbard
  • Weiwei Zhu
  • Ruslan Horblyuk
  • Leah Karliner
  • Brian L. Sprague
  • Louise Henderson
  • David Lee
  • Tracy Onega
  • Diana S. M. Buist
  • Alison Sweet
Epidemiology

Abstract

The transition from screen-film to digital mammography may have altered diagnostic evaluation of women following a positive screening examination. This study compared the use and timeliness of diagnostic imaging and biopsy for women screened with screen-film or digital mammography. Data were obtained from 35,321 positive screening mammograms on 32,087 women aged 40–89 years, from 22 breast cancer surveillance consortium facilities in 2005–2008. Diagnostic pathways were classified by their inclusion of diagnostic mammography, ultrasound, magnetic resonance imaging, and biopsy. We compared time to resolution and frequency of diagnostic pathways by patient characteristics, screening exam modality, and radiology facility. Between-facility differences were evaluated by computing the proportion of mammograms receiving follow-up with a particular pathway for each facility and examining variation in these proportions across facilities. Multinomial logistic regression adjusting for age, calendar year, and facility compared odds of follow-up with each pathway. The median time to resolution of a positive screening mammogram was 10 days. Compared to screen-film mammograms, digital mammograms were more frequently followed by only a single diagnostic mammogram (46 vs. 36 %). Pathways following digital screening mammography were also less likely to include biopsy (16 vs. 20 %). However, in adjusted analyses, most differences were not statistically significant (p = 0.857 for mammography only; p = 0.03 for biopsy). Substantial variability in diagnostic pathway frequency was seen across facilities. For instance, the frequency of evaluation with diagnostic mammography alone ranged from 23 to 55 % across facilities. Differences in evaluation of positive digital and screen-film screening mammograms were minor, and appeared to be largely attributable to substantial variation between radiology facilities. To guide health systems in their efforts to eliminate practices that do not contribute to effective care, we need further research to identify the causes of this variation and the best evidence-based approach for follow-up.

Keywords

Breast cancer Diagnostic evaluation Digital mammography Mammography Screening 

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Rebecca A. Hubbard
    • 1
    • 2
  • Weiwei Zhu
    • 1
  • Ruslan Horblyuk
    • 3
  • Leah Karliner
    • 4
  • Brian L. Sprague
    • 5
  • Louise Henderson
    • 6
  • David Lee
    • 3
  • Tracy Onega
    • 7
  • Diana S. M. Buist
    • 1
    • 8
    • 9
  • Alison Sweet
    • 10
  1. 1.Group Health Research Institute, Group Health CooperativeSeattleUSA
  2. 2.Department of BiostatisticsSchool of Public Health, University of WashingtonSeattleUSA
  3. 3.GE HealthcareWaukeshaUSA
  4. 4.Division of General Internal MedicineUniversity of California San FranciscoSan FranciscoUSA
  5. 5.Department of Surgery and Office of Health Promotion ResearchUniversity of VermontBurlingtonUSA
  6. 6.Department of RadiologyUniversity of North Carolina at Chapel HillChapel HillUSA
  7. 7.Department of Community and Family MedicineNorris Cotton Cancer Center, Dartmouth Medical SchoolLebanonUSA
  8. 8.Department of Health ServicesSchool of Public Health, University of WashingtonSeattleUSA
  9. 9.Department of EpidemiologySchool of Public Health, University of WashingtonSeattleUSA
  10. 10.GE HealthcareBuckinghamshireUK

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