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Related Experiment Video

Updated: Jun 5, 2026

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
13:44

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns

Published on: August 30, 2013

Missed and true interval and screen-detected breast cancers in a population based screening program.

Solveig Roth Hoff1, Jon Helge Samset, Anne-Line Abrahamsen

  • 1Department of Radiology, Aalesund Hospital, Helse Sunnmøre HF, Aalesund, Norway. sorohoff@gmail.com

Academic Radiology
|January 11, 2011
PubMed
Summary

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Radiologists reviewed mammograms to identify features of missed interval and screen-detected cancers. Calcifications on prior mammograms were more common in missed cancers, highlighting interpretation challenges in breast cancer screening.

Area of Science:

  • Radiology
  • Oncology
  • Medical Imaging

Background:

  • Screening mammography aims to detect breast cancer early.
  • Interval cancers are detected between screening rounds, while screen-detected cancers are found during screening.
  • Accurate interpretation of mammographic features is crucial for effective breast cancer screening.

Purpose of the Study:

  • To compare the distribution of mammographic features on prior screening mammograms of missed interval and screen-detected cancers.
  • To analyze mammographic features on diagnostic mammograms of screen-detected cancers.
  • To evaluate differences between discordant and concordant screen-detected cancers.

Main Methods:

  • Retrospective review of prior and diagnostic mammograms from 2002-2008 in Norway.

Related Experiment Videos

Last Updated: Jun 5, 2026

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
13:44

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns

Published on: August 30, 2013

  • Four experienced breast radiologists classified mammograms as missed or true.
  • Mammographic features were analyzed using a modified Breast Imaging Reporting and Data System (BI-RADS).

    • Main Results:

    • 30% of interval cancers and 21% of screen-detected cancers were classified as missed.
    • Calcifications were more frequent in missed cancers (34%) compared to screen-detected cancers (21%) on prior mammograms.
    • Masses were more common in screen-detected cancers (68%) than missed cancers (54%).

    Conclusions:

    • Calcifications pose a challenge in interpreting screening mammograms.
    • Reviewing both interval and screen-detected cancers is essential for education and improving detection rates.
    • Systematic reviews and adherence to guidelines can potentially reduce missed cancers in mammographic screening programs.