BIRADS was developed by the American College of Radiologists as a standard of comparison for rating mammograms and breast ultrasound images. It sets up a classification for Level of Suspicion (LOS)-- the possibility of breast cancer.
The table below shows the BIRADS scoring system. The numbers in the left column are what will appear in your mammogram report. A score of 3, 4 or 5 will require follow-up.
Please note: A score of 6 is given only after a biopsy has been examined and found to be cancerous; treatment would definitely be required.
Read an explanation of each BIRAD classification.
|Category||Diagnosis||Number of Criteria|
|0||Incomplete||Your mammogram or ultrasound didn't give the radiologist enough information to make a clear diagnosis; follow-up imaging is necessary|
|1||Negative||There is nothing to comment on; routine screening recommended|
|2||Benign||A definite benign finding; routine screening recommended|
|3||Probably Benign||Findings that have a high probability of being benign (>98%); six-month short interval follow-up|
|4||Suspicious Abnormality||Not characteristic of breast cancer, but reasonable probability of being malignant (3 to 94%); biopsy should be considered|
|5||Highly Suspicious of Malignancy||Lesion that has a high probability of being malignant (>= 95%); take appropriate action|
|6||Known Biopsy Proven Malignancy||Lesions known to be malignant that are being imaged prior to definitive treatment; assure that treatment is completed|