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European Radiology

, Volume 27, Issue 8, pp 3211–3216 | Cite as

Management for BI-RADS category 3 lesions detected in preoperative breast MR imaging of breast cancer patients

  • Hye Mi Gweon
  • Nariya ChoEmail author
  • Soo-Yeon Kim
  • Hye Ryoung Koo
  • Mirinae Seo
  • Ajung Chu
  • Eun Ju Son
Breast

Abstract

Objective

To retrospectively evaluate characteristics of and determine appropriate follow-up recommendations for BI-RADS category 3 lesions detected in preoperative MRI of breast cancer patients.

Methods

BI-RADS category 3 assessments were identified from the breast MRI database for 5,110 consecutive breast cancer patients who had undergone preoperative MRI and surgery. Patient and lesion characteristics, malignancy rate, and interval between lesion detection and cancer diagnosis were analysed. Histopathological results or imaging at or after 2-year follow-up were used as reference standards.

Results

Of the 626 lesions, morphological features included a single focus in 26.5% (n = 166), multiple foci in 47.1% (n = 295), mass in 21.7% (n = 136) and non-mass enhancement in 4.6% (n = 29). Cancer was found in 0.8% (5/626) at a median interval of 50 months (range, 29–66 months). Malignancy rate according to morphological feature was: 1.8% (3/166) in a single focus, 0.7% (1/136) in mass and 3.4% (1/29) in non-mass enhancement. All detected cancers were stage 0 or IA.

Conclusions

Annual follow-up might be adequate for BI-RADS category 3 lesions detected at preoperative MRI because of the 0.8% (5/626) malignancy rate, long interval between lesion detection and cancer diagnosis, and early stage of diagnosed cancers.

Key Points

BI-RADS category 3 lesions on preoperative MRI had 0.8% malignancy rate.

All cancer diagnoses from BI-RADS 3 occurred after 24-month follow-up.

Annual follow-up might be adequate for BI-RADS 3 detected on preoperative MRI.

Keywords

Breast cancer Magnetic resonance imaging Follow-up studies Imaging Appointments and schedule 

Notes

Compliance with ethical standards

Guarantor

The scientific guarantor of this publication is Nariya Cho.

Conflict of interest

The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.

Funding

The authors state that this work has not received any funding.

Statistics and biometry

No complex statistical methods were necessary for this paper.

Ethical approval

Institutional Review Board approval was obtained.

Informed consent

Written informed consent was waived by the Institutional Review Board.

Methodology

  • retrospective

  • observational

  • performed at one institution

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Copyright information

© European Society of Radiology 2017

Authors and Affiliations

  1. 1.Department of RadiologySeoul National University College of Medicine, Seoul National University HospitalSeoulRepublic of Korea
  2. 2.Department of RadiologyGangnam Severance Hospital, Yonsei University College of MedicineSeoulRepublic of Korea
  3. 3.Department of RadiologyHanyang University College of MedicineSeoulRepublic of Korea
  4. 4.Department of RadiologyKyung Hee University College of MedicineSeoulRepublic of Korea
  5. 5.Department of RadiologySeoul National University College of Medicine, Boramae Medical CenterSeoulRepublic of Korea

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