A comparative study of palpable and nonpalpable breast cancers determined by ultrasonography

Ran Cho Kyu, Kyoung Seo Bo, Juneyoung Lee, Yeol Lee Ki, Kyung Je Bo, Hyun Kim Baek, Hoon Cha Sang, Whan Oh Yu, Seokjin Kim, Won Bae Jeoung

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Purpose: The aim of this study was to investigate any difference of ultrasound findings for palpable and nonpalpable breast cancers. Methods: Two hundred breast cancer patients that had undergone preoperative ultrasound and surgery were enrolled in the study. A total of 126 cancers were palpable, and the remaining 74 cancers were nonpalpable. We compared lesion characteristics using ultrasound images according to the BI-RADS®-Ultrasound guidelines of the American College of Radiology. A crude odds ratio (OR) and 95% confidence interval (CI) were calculated for a comparison of the palpable and nonpalpable breast cancers. Results: Nonpalpable cancers displayed more often an oval shape (OR=0.35, 95% CI=0.17-0.70), no posterior acoustic features (OR=0.50, 95% CI=0.28-0.89), and a parallel orientation (OR=0.50, 95% CI=0.28-0.89). An irregular shape (OR=2.98, 95% CI=1.60-5.54), a spiculated margin (OR= 2.66, 95% CI=1.23-5.74), and a combined pattern of posterior acoustic features (OR=7.20, 95% CI=1.64-31.66) were more commonly observed in the palpable cancers. Conclusion: Palpable and nonpalpable breast cancers were found to have different ultrasound characteristics.

Original languageEnglish
Pages (from-to)64-70
Number of pages7
JournalJournal of Breast Cancer
Issue number2
Publication statusPublished - 2008 Jun


  • Breast
  • Breast neoplasms
  • Mammary
  • Palpation
  • Ultrasonography

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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