BI-RADS · Mama

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

vigente

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

Índice de referência, não é suporte à decisão clínica. O RadCommons apresenta conteúdo de referência reescrito a partir de critérios publicados e com link para a fonte primária. Confira sempre a publicação primária vigente. Não é um dispositivo médico nem substitui o julgamento clínico. O radiologista responsável pelo laudo permanece o autor e o responsável.

Escala de categorias

0 1 2 3 4 4A 4B 4C 5 6

As figuras e tabelas estão na fonte primária. Abrir a fonte. O RadCommons reescreve e cita, não reproduz figuras protegidas por direitos autorais.

Procedência e vigência

Órgão emissor: American College of Radiology
Versão: 5th edition
Ano: 2013
Família: léxico
Tipo de lógica: flat
Modalidade: Mammography, US, MRI
Fonte primária: ACR BI-RADS Atlas, Breast Imaging Reporting and Data System, 5th edition
Última verificação: 2026-06-22
Última checagem: 2026-06-22

Lógica de decisão

Forma estruturada (flat). Uma futura calculadora a lê; as categorias abaixo são a superfície legível.

Mostrar a lógica estruturada (JSON)

{
  "categories": [
    "0",
    "1",
    "2",
    "3",
    "4",
    "4A",
    "4B",
    "4C",
    "5",
    "6"
  ]
}

Categorias num relance

Cat.	Significado	Conduta	Risco	Fonte
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.	—	okfonte 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.	okfonte 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.	okfonte 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.	okfonte 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%.	okfonte 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 Low suspicion within category 4.	Tissue diagnosis (image-guided biopsy) recommended.	Greater than 2% to no more than 10% likelihood of malignancy.	okfonte BI-RADS 5th edition category 4 subdivisions; PMC6413875 Introduction and Table 2 ("4A > 2% to ≤ 10%")
4B	Moderate suspicion for malignancy Moderate suspicion within category 4.	Tissue diagnosis (image-guided biopsy) recommended.	Greater than 10% to no more than 50% likelihood of malignancy.	okfonte 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.	okfonte 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.	okfonte 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.	okfonte BI-RADS assessment categories (5th edition); radiologyassistant.nl BI-RADS 2013, category 6

Histórico de versões

Data	Evento	Detalhe	Situação
2013-01-01	published	BI-RADS Atlas 5th edition published. evidência	confirmado

Quickstart da APIGET /api/v1/systems/bi-rads-2013aberto

curl -s "https://radcommons.laudos.ai/api/v1/systems/bi-rads-2013"

Ver documentação completa →