Diagnostic Performance and Additional Value of Elastosonography in Focal Breast Lesions: Statistical Correlation between Size-Dependant Strain Index Measurements, Multimodality-BI-RADS Score, and Histopathology in a Clinical Routine Setting
Table 1
ACR BIRADS categories in ultrasound: ultrasound assessment categories as proposed by the ACR (BI-RADS).
0
Need for additional imaging evaluation.
The final assessment category cannot be determined by ultrasound. Further imaging studies involve mammography and MRI.
1
Negative.
In this category, no lesions are found on ultrasound. There are no mass forming processes or calcifications present.
2
Benign findings.
Lesions in this category do not require further imaging.
3
Probably benign finding—short-interval follow-up is recommended.
In the ACR recommendations, this category consists of lesions with circumscribed margins, oval shape, and horizontal orientation. Further, complicated cysts may also be placed in this group.
4
Suspicious abnormality—biopsy should be considered.
The ACR states that lesions belonging to this category exhibit a probability of cancer ranging from 3% to 94%. Those lesions are always biopsied at our institution.
5
Highly suggestive of malignancy—appropriate action should be taken.
The risk of cancer is above 95%. Those lesions require core biopsy and/or excision. Staging for lymph node involvement is mandatory.
6
Biopsy-proven malignancy—appropriate action should be taken.
Copyright Notice American College of Radiology (ACR) Breast Imaging Reporting and Data System Atlas (BI-RADS Atlas). Reston, VA: American College of Radiology. 2003. All rights reserved. () The italicized text is explanatory but not part of the BI-RADS assessments and should not be represented as such.
