# BI-RADS — Breast Imaging Reporting and Data System, 5th edition

> Final assessment categories and management for mammography, breast ultrasound, and breast MRI.

**Situação:** vigente · **Órgão:** Mama · **Órgão emissor:** American College of Radiology · **Versão:** 5th edition · **Ano:** 2013

> ⚠️ Uma versão mais nova pode existir (em revisão).

## Procedência e vigência
- Família: léxico
- Tipo de lógica: flat
- Modalidade: Mammography, US, MRI
- Fonte primária: D'Orsi CJ, Sickles EA, Mendelson EB, Morris EA, et al.. ACR BI-RADS Atlas, Breast Imaging Reporting and Data System, 5th edition (2013) — https://www.acr.org/Clinical-Resources/Clinical-Tools-and-Reference/Reporting-and-Data-Systems/Bi-Rads
- Última verificação: 2026-07-24
- Última checagem: 2026-08-12

## Categorias

| Código | Rótulo | Critérios | Conduta | Risco | Localizador | Verificado |
| --- | --- | --- | --- | --- | --- | --- |
| 0 | Incomplete, need additional imaging | Incomplete assessment; the workup cannot yet be finalized and more information is needed. | Obtain additional imaging (e.g., extra mammographic views or ultrasound) and/or retrieve prior studies for comparison before assigning a final category. | — | BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS for mammography and ultrasound 2013, category 0 | ✓ |
| 1 | Negative | Negative study; no masses, architectural distortion, or suspicious calcifications identified. | Continue routine age-appropriate screening. | Essentially 0% likelihood of malignancy. | BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS 2013, category 1 | ✓ |
| 2 | Benign | Benign finding(s) described (e.g., calcified fibroadenoma, fat-containing lesion, intramammary node, post-surgical change). | Continue routine age-appropriate screening; no specific follow-up of the finding required. | Essentially 0% likelihood of malignancy. | BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS 2013, category 2 | ✓ |
| 3 | Probably benign | Probably benign finding; expected to be benign with very high confidence. | Short-interval (initially 6-month) follow-up, then continued surveillance (e.g., at 12 months); if stable over the surveillance period the finding may be downgraded to category 2. | Greater than 0% but no more than 2% likelihood of malignancy. | BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS 2013, category 3 ("less than a 2% risk of malignancy") | ✓ |
| 4 | Suspicious | Suspicious finding that does not have the classic appearance of malignancy but warrants tissue sampling. | Tissue diagnosis (image-guided needle biopsy) should be considered; category may be subdivided into 4A, 4B, 4C. | Wide range of likelihood of malignancy spanning greater than 2% to less than 95%. | BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS 2013, category 4; PMC6413875 Introduction ("Category 4 covers a wide range of likelihood of malignancy, from more than 2% to less than 95%") | ✓ |
| 4A | Low suspicion for malignancy | Suspicious breast finding in the low-suspicion subdivision of category 4, corresponding to a greater than 2% but no more than 10% likelihood of malignancy. | Tissue diagnosis (image-guided biopsy) recommended. | Greater than 2% to no more than 10% likelihood of malignancy. | BI-RADS 5th edition category 4 subdivisions; PMC6413875 Introduction and Table 2 ("4A > 2% to ≤ 10%") | ✓ |
| 4B | Moderate suspicion for malignancy | Suspicious breast finding in the moderate-suspicion subdivision of category 4, corresponding to a greater than 10% but no more than 50% likelihood of malignancy. | Tissue diagnosis (image-guided biopsy) recommended. | Greater than 10% to no more than 50% likelihood of malignancy. | BI-RADS 5th edition category 4 subdivisions; PMC6413875 Introduction and Table 2 ("4B > 10% to ≤ 50%") | ✓ |
| 4C | High suspicion for malignancy | High suspicion within category 4 (but not the classic appearance of malignancy). | Tissue diagnosis (image-guided biopsy) recommended. | Greater than 50% to less than 95% likelihood of malignancy. | BI-RADS 5th edition category 4 subdivisions; PMC6413875 Introduction and Table 2 ("4C > 50% to < 95%") | ✓ |
| 5 | Highly suggestive of malignancy | Highly suggestive of malignancy with the classic appearance of breast cancer. | Appropriate action should be taken (tissue diagnosis / definitive management). | At least 95% likelihood of malignancy. | BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS 2013, category 5 (">95% likelihood of malignancy") | ✓ |
| 6 | Known biopsy proven malignancy | Biopsy-proven malignancy already established by prior tissue diagnosis. | Used to monitor a known cancer before/after definitive treatment (e.g., after incomplete excision or during neoadjuvant chemotherapy). | Known (biopsy-proven) malignancy. | BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS 2013, category 6 | ✓ |

### Citações por categoria
- **0**: D'Orsi CJ, Sickles EA, Mendelson EB, Morris EA, et al.. ACR BI-RADS Atlas, Breast Imaging Reporting and Data System, 5th edition (2013) — https://www.acr.org/Clinical-Resources/Clinical-Tools-and-Reference/Reporting-and-Data-Systems/Bi-Rads · BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS for mammography and ultrasound 2013, category 0
- **1**: D'Orsi CJ, Sickles EA, Mendelson EB, Morris EA, et al.. ACR BI-RADS Atlas, Breast Imaging Reporting and Data System, 5th edition (2013) — https://www.acr.org/Clinical-Resources/Clinical-Tools-and-Reference/Reporting-and-Data-Systems/Bi-Rads · BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS 2013, category 1
- **2**: D'Orsi CJ, Sickles EA, Mendelson EB, Morris EA, et al.. ACR BI-RADS Atlas, Breast Imaging Reporting and Data System, 5th edition (2013) — https://www.acr.org/Clinical-Resources/Clinical-Tools-and-Reference/Reporting-and-Data-Systems/Bi-Rads · BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS 2013, category 2
- **3**: D'Orsi CJ, Sickles EA, Mendelson EB, Morris EA, et al.. ACR BI-RADS Atlas, Breast Imaging Reporting and Data System, 5th edition (2013) — https://www.acr.org/Clinical-Resources/Clinical-Tools-and-Reference/Reporting-and-Data-Systems/Bi-Rads · BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS 2013, category 3 ("less than a 2% risk of malignancy")
- **4**: D'Orsi CJ, Sickles EA, Mendelson EB, Morris EA, et al.. ACR BI-RADS Atlas, Breast Imaging Reporting and Data System, 5th edition (2013) — https://www.acr.org/Clinical-Resources/Clinical-Tools-and-Reference/Reporting-and-Data-Systems/Bi-Rads · BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS 2013, category 4; PMC6413875 Introduction ("Category 4 covers a wide range of likelihood of malignancy, from more than 2% to less than 95%")
- **4A**: D'Orsi CJ, Sickles EA, Mendelson EB, Morris EA, et al.. ACR BI-RADS Atlas, Breast Imaging Reporting and Data System, 5th edition (2013) — https://www.acr.org/Clinical-Resources/Clinical-Tools-and-Reference/Reporting-and-Data-Systems/Bi-Rads · BI-RADS 5th edition category 4 subdivisions; PMC6413875 Introduction and Table 2 ("4A > 2% to ≤ 10%")
- **4B**: D'Orsi CJ, Sickles EA, Mendelson EB, Morris EA, et al.. ACR BI-RADS Atlas, Breast Imaging Reporting and Data System, 5th edition (2013) — https://www.acr.org/Clinical-Resources/Clinical-Tools-and-Reference/Reporting-and-Data-Systems/Bi-Rads · BI-RADS 5th edition category 4 subdivisions; PMC6413875 Introduction and Table 2 ("4B > 10% to ≤ 50%")
- **4C**: D'Orsi CJ, Sickles EA, Mendelson EB, Morris EA, et al.. ACR BI-RADS Atlas, Breast Imaging Reporting and Data System, 5th edition (2013) — https://www.acr.org/Clinical-Resources/Clinical-Tools-and-Reference/Reporting-and-Data-Systems/Bi-Rads · BI-RADS 5th edition category 4 subdivisions; PMC6413875 Introduction and Table 2 ("4C > 50% to < 95%")
- **5**: D'Orsi CJ, Sickles EA, Mendelson EB, Morris EA, et al.. ACR BI-RADS Atlas, Breast Imaging Reporting and Data System, 5th edition (2013) — https://www.acr.org/Clinical-Resources/Clinical-Tools-and-Reference/Reporting-and-Data-Systems/Bi-Rads · BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS 2013, category 5 (">95% likelihood of malignancy")
- **6**: D'Orsi CJ, Sickles EA, Mendelson EB, Morris EA, et al.. ACR BI-RADS Atlas, Breast Imaging Reporting and Data System, 5th edition (2013) — https://www.acr.org/Clinical-Resources/Clinical-Tools-and-Reference/Reporting-and-Data-Systems/Bi-Rads · BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS 2013, category 6

## Histórico de versões

| Data | Evento | Detalhe | Situação |
| --- | --- | --- | --- |
| 2026-08-11 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-08-09 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-08-07 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-08-06 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-08-05 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-08-04 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-31 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-25 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-24 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-23 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-21 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-20 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-19 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-18 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-17 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-16 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-15 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-10 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-09 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-08 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-07 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-07-05 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-06-30 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-06-29 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-06-25 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2026-06-24 | revised | Monitored source changed (content_hash). Detected automatically; awaiting reviewer confirmation. | needs_review |
| 2013-01-01 | published | BI-RADS Atlas 5th edition published. | confirmed |


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> Conteúdo de referência reescrito. Confira a publicação primária vigente. Não é dispositivo médico nem substitui o julgamento clínico. O radiologista responsável pelo laudo permanece o autor e o responsável.

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