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

 Hye Mi Gweon  ;  Nariya Cho  ;  Soo-Yeon Kim  ;  Hye Ryoung Koo  ;  Mirinae Seo  ;  Ajung Chu  ;  Eun Ju Son 
 EUROPEAN RADIOLOGY, Vol.27(8) : 3211-3216, 2017 
Journal Title
Issue Date
Adult ; Aged ; Breast Neoplasms/diagnostic imaging ; Breast Neoplasms/pathology* ; Continuity of Patient Care ; Disease Management ; Female ; Follow-Up Studies ; Humans ; Image Interpretation, Computer-Assisted ; Magnetic Resonance Imaging/methods* ; Middle Aged ; Retrospective Studies
Appointments and schedule ; Breast cancer ; Follow-up studies ; Imaging ; Magnetic resonance imaging
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.
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1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Gweon, Hye Mi(권혜미) ORCID logo https://orcid.org/0000-0002-3054-1532
Son, Eun Ju(손은주) ORCID logo https://orcid.org/0000-0002-7895-0335
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