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Câncer de mama invasivo primário

Última revisão: 16 Jan 2026
Última atualização: 07 Nov 2025

Resumo

Definição

History and exam

Key diagnostic factors

  • presença de fatores de risco
  • massa mamária
  • descarga mamilar
  • linfadenopatia axilar
Full details

Other diagnostic factors

  • espessamento ou descoloração da pele
  • retração, inversão ou descamação do mamilo
Full details

Risk factors

  • idade mais avançada
  • sexo feminino
  • origem étnica
  • história familiar positiva de câncer de mama e/ou outros tipos de câncer
  • mutações genéticas em genes de suscetibilidade ao câncer de mama
  • exposição ao estrogênio endógeno
  • exposição ao estrogênio exógeno/progestina
  • consumo de bebidas alcoólicas
  • exposição à radiação
  • doença atípica da mama
  • aumento da densidade da mama
  • realce parenquimatoso de fundo leve, moderado ou acentuado na ressonância nuclear magnética (RNM) da mama
  • atividade física reduzida
  • má alimentação
  • condição socioeconômica alta
  • tabagismo
  • obesidade
  • alta exposição ao dibutil-ftalato
Full details

Diagnostic tests

1st tests to order

  • mamografia
Full details

Tests to consider

  • ultrassonografia das mamas
  • RNM da mama
  • biópsia
  • perfil de receptores hormonais
  • Teste de HER2
  • ensaios da expressão gênica
  • tomografia computadorizada
  • teste genético
  • Hemograma completo
  • TFHs
  • fosfatase alcalina
Full details

Treatment algorithm

ACUTE

câncer de mama em estádio inicial (estádios I a IIB [T2 N1 M0])

câncer de mama avançado localmente (estádios IIB [T3 N0 M0] a III)

ONGOING

recorrência da doença

Contributors

Authors

Kandace P. McGuire, MD

Professor of Surgery

Virginia Commonwealth University

Richmond

VA

Disclosures

KPM is on the Advisory Board for Kubtec and the speaker bureau for Endomag/Hologic.

Acknowledgements

Dr Kandace McGuire would like to gratefully acknowledge Dr Krystal Cascetta, Professor Amy Tiersten, Dr Hope S. Rugo, Dr Amal Melhem-Bertrandt, Dr Gabriel N. Hortobagyi, and Dr Phuong Khanh H. Morrow, the previous contributors to this topic.

Disclosures

KC, AMB, GNH, and PKHM declare that they have no competing interests. AT is on the advisory board for Immunomedics, AstraZeneca, Novartis, Eisai, and Healthline; receives research funding from Pfizer, Novartis, Genentech, Lilly, and AstraZeneca; and does expert testimony work. HSR receives research funding through the University of California from Novartis, Pfizer, Genentech, Macrogenics, Plexxikon, Merck, Nektar, and GSK; has been reimbursed for travel by Novartis, Genentech, and Nektar; and has received speaker honorarium from Genomic Health.

Peer reviewers

Savannah Liddell, MD

Fellow

Mayo Clinic College of Medicine and Science

Rochester

MN

Disclosures

SL declares that she has no competing interests.

Katherine H.R. Tkaczuk, MD, FACP

Professor of Medicine

University of Maryland School of Medicine

Baltimore

MD

Disclosures

KHRT declares that she has no competing interests.

Susan Tannenbaum, MD

Associate Professor, Medicine

Chief, Division of Hematology/Oncology

Medical Director, Neag Comprehensive Cancer Center

University of Connecticut

Farmington

CT

Disclosures

ST declares that she has no competing interests.

Emily Hsu, MD

Fellow

Division of Hematology/Oncology

University of Connecticut

Farmington

CT

Disclosures

EH declares that she has no competing interests.

Anees Chagpar, MD

Assistant Professor

University of Louisville

Louisville

KY

Disclosures

AC declares that she has no competing interests.

Gurhan Celik, MD

General Surgeon

General Surgery Department

Istanbul Training and Research Hospital

Istanbul

Turkey

Disclosures

GC is an author of a number of references cited in this topic.

Edward R. Sauter, MD, PhD

Medical Officer

Breast and Gynecologic Cancer Working Group

Division of Cancer Prevention

National Cancer Institute

Bethesda

MD

Disclosures

ERS declares that he has no competing interests.

Peer reviewer acknowledgements

BMJ Best Practice topics are updated on a rolling basis in line with developments in evidence and guidance. The peer reviewers listed here have reviewed the content at least once during the history of the topic.

Disclosures

Peer reviewer affiliations and disclosures pertain to the time of the review.

References

Our in-house evidence and editorial teams collaborate with international expert contributors and peer reviewers to ensure that we provide access to the most clinically relevant information possible.

Key articles

National Comprehensive Cancer Network. NCCN clinical practice guidelines in oncology: breast cancer screening and diagnosis [internet publication].Full text

National Comprehensive Cancer Network. NCCN clinical practice guidelines in oncology: breast cancer [internet publication].Full text

Loibl S, André F, Bachelot T, et al. Early breast cancer: ESMO clinical practice guideline for diagnosis, treatment and follow-up. Ann Oncol. 2024 Feb;35(2):159-82.Full text  Abstract

Denduluri N, Somerfield MR, Eisen A, et al. Selection of optimal adjuvant chemotherapy regimens for human epidermal growth factor receptor 2 (HER2)-negative and adjuvant targeted therapy for HER2-positive breast cancers: an American Society of Clinical Oncology guideline adaptation of the Cancer Care Ontario clinical practice guideline. J Clin Oncol. 2016 Jul 10;34(20):2416-27.Full text  Abstract

Park KU, Somerfield MR, Anne N, et al. Sentinel lymph node biopsy in early-stage breast cancer: ASCO guideline update. J Clin Oncol. 2025 May 10;43(14):1720-41.Full text  Abstract

Reference articles

A full list of sources referenced in this topic is available to users with access to all of BMJ Best Practice.
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  • Patient information

    Câncer de mama localmente avançado: o que é?

    Câncer de mama: CDIS (câncer de mama em estágio muito inicial) em mulheres

    More Patient information
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