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

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

Examples of such lesions or findings include:

calcified fibroadenomas
multiple secretory calcifications
fat-containing lesions such as:
- oil cysts
- breast lipomas
- galactoceles
- mixed density hamartomas
cutaneous neurofibromas ³: e.g. in neurofibromatosis type I (evidence of sarcomatous change is change is considered very low)
intramammary lymph nodes
breast sebaceous cysts
simple breast cysts ⁴
breast implants

Reporting recommendations

Although BI-RADS 1 and BI-RADS 2 both denote an essentially zero 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.

-BI-RADS 2 is a benign category in <a href="/articles/breast-imaging-reporting-and-data-system-bi-rads">breast imaging reporting and data system</a>. A finding placed in this category should have a 100% chance of being benign. Examples of such lesions or findings include:<ul>
~~-<li>calcified <a href="/articles/fibroadenoma-breast">fibroadenomas</a>~~
~~-</li>~~
~~-<li>multiple <a href="/articles/secretory-calcifications-in-breast">secretory calcifications</a>~~
~~-</li>~~
~~-<li>fat-containing lesions such as:<ul>~~
~~-<li><a href="/articles/oil-cysts">oil cysts</a></li>~~
~~-<li><a href="/articles/breast-lipoma">breast lipomas</a></li>~~
~~-<li><a href="/articles/galactocoele">galactoceles</a></li>~~
~~-<li>mixed density <a href="/articles/breast-hamartoma">hamartomas</a>~~
~~-</li>~~
~~-</ul>~~
~~-</li>~~
~~-<li>~~
-<a href="/articles/cutaneous-neurofibromas">cutaneous neurofibromas</a> 3: e.g. in <a href="/articles/neurofibromatosis-type-1">neurofibromatosis type I</a> (evidence of sarcomatous change is change is considered very low)</li>
~~-<li><a href="/articles/intramammary-lymph-nodes">intramammary lymph nodes</a></li>~~
~~-<li><a href="/articles/breast-sebaceous-cyst">breast sebaceous cysts</a></li>~~
~~-<li>~~
~~-<a href="/articles/simple-breast-cyst-1">simple breast cysts</a> 4~~
~~-</li>~~
~~-<li><a href="/articles/breast-implants">breast implants</a></li>~~
+BI-RADS 2 is a benign category in <a href="/articles/breast-imaging-reporting-and-data-system-bi-rads">breast imaging reporting and data system</a>. A finding placed in this category should have a 100% chance of being benign. Examples of such lesions or findings include:<ul>
+<li>calcified <a href="/articles/fibroadenoma-breast">fibroadenomas</a>
+</li>
+<li>multiple <a href="/articles/secretory-calcifications-in-breast">secretory calcifications</a>
+</li>
+<li>fat-containing lesions such as:<ul>
+<li><a href="/articles/oil-cysts">oil cysts</a></li>
+<li><a href="/articles/breast-lipoma">breast lipomas</a></li>
+<li><a href="/articles/galactocoele">galactoceles</a></li>
+<li>mixed density <a href="/articles/breast-hamartoma">hamartomas</a>
+</li>
+</ul>
+</li>
+<li>
+<a href="/articles/cutaneous-neurofibromas">cutaneous neurofibromas</a> 3: e.g. in <a href="/articles/neurofibromatosis-type-1">neurofibromatosis type I</a> (evidence of sarcomatous change is change is considered very low)</li>
+<li><a href="/articles/intramammary-lymph-nodes">intramammary lymph nodes</a></li>
+<li><a href="/articles/breast-sebaceous-cyst">breast sebaceous cysts</a></li>
+<li>
+<a href="/articles/simple-breast-cyst-1">simple breast cysts</a> 4
+</li>
+<li><a href="/articles/breast-implants">breast implants</a></li>

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

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