Breast imaging-reporting and data system (BI-RADS) assessment category 2

BI-RADS 2 is a benign category in the breast imaging reporting and data system. A finding placed in this category should have essentially a 100% chance of being benign. 

Examples of such lesions include:

Reporting recommendations

Although BI-RADS 1 and BI-RADS 2 have an essentially 0% chance of malignancy, BI-RADS 1 is used in situations where the breast is completely unremarkable, and BI-RADS 2 is used when the radiologist wants to remark on a benign finding.

Any BI-RADS 2 breast finding is not expected to change over the follow-up interval. The radiologist should mention that it is a definite benign lesion.

Usual screening follow-up is recommended.

Breast imaging and pathology
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Article information

rID: 13953
System: Breast
Synonyms or Alternate Spellings:
  • BI-RADS 2
  • BIRADS 2 lesion

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Cases and figures

    Case 1: BIRADS 2 lesion
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  • Sebaceous cyst
    Case 2: BIRADS 2 lesion : breast sebaceous cyst
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  •  Case 3: simple cyst
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