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Accuracy of classification of breast ultrasound findings based on criteria used for BI‐RADS
Author(s) -
Heinig J.,
Witteler R.,
Schmitz R.,
Kiesel L.,
Steinhard J.
Publication year - 2008
Publication title -
ultrasound in obstetrics and gynecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.202
H-Index - 141
eISSN - 1469-0705
pISSN - 0960-7692
DOI - 10.1002/uog.5191
Subject(s) - bi rads , medicine , malignancy , breast ultrasound , ultrasound , radiology , breast imaging , categorization , biopsy , mammography , breast cancer , pathology , cancer , artificial intelligence , computer science
Objective To assess the accuracy of categorization of breast ultrasound findings based on scoring for malignancy using the sonographic breast imaging‐reporting and data system (BI‐RADS). Methods Breast ultrasound was performed in 2462 patients between 2001 and 2004 at our unit. Sonographic findings were scored using analog criteria as in BI‐RADS for breast ultrasound (mass shape, margin, orientation, posterior acoustic features, lesion boundary, echo pattern). Each lesion was described using these features and classified into categories 1 to 5 according to the BI‐RADS for breast ultrasound. Categorization and biopsy results were compared. Results In twenty‐two (0.9%) patients breast ultrasound could not be evaluated because of extreme density of tissue. Normal breast ultrasound belonging to Category 1 was found in 871 (35.4%) patients. Simple cysts classified as Category 2 were observed in 712 (28.9%) women. In 491 (19.9%) patients, apparently benign solid masses (Category 3) were found. Suspicious masses were observed in 225 (9.1%) women and masses highly suggestive of malignancy were found in 141 (5.7%) patients (Categories 4 and 5, respectively). Histological examinations were available from 84 (17.1%) masses that had been classified by BI‐RADS as Category 3, in 97 (43.1%) from Category 4 and 106 (75.2%) from Category 5. Accordingly, the rate of malignant findings was 1.2% ( n = 1) in Category 3, 17% ( n = 16) in Category 4 and 94% ( n = 100) in Category 5. Conclusion Scoring breast ultrasound findings for malignancy based on criteria used for BI‐RADS breast ultrasound has a high accuracy, comparable to that obtained by BI‐RADS for mammography. Copyright © 2008 ISUOG. Published by John Wiley & Sons, Ltd.