Breast Cancer Stages: Symptoms and Treatment

Breast Cancer
Originally Published:
February 22, 2021
Updated:
March 27, 2025
Read Time:
5 min
Author:
Breast Cancer Stages: Symptoms and Treatment

Receiving a breast cancer diagnosis can be overwhelming. After mammograms, self-exams, and doctor visits, hearing the words "you have breast cancer" raises urgent questions: What happens next? What treatment options are available? What stage am I in?

Knowing the stage of breast cancer is essential—it helps determine treatment, prognosis, and your care plan moving forward.

Woman talking with her doctor about breast cancer diagnosis and treatment options.
Discussing your diagnosis with a specialist is the first step in building the right breast cancer treatment plan.

Common Symptoms of Breast Cancer

Breast cancer can present differently depending on the person and the stage. Here are some of the most common signs and symptoms:

  • A lump or thickening in the breast
  • Persistent breast pain
  • Redness or pitted skin resembling an orange peel
  • Swelling in all or part of the breast
  • Nipple discharge (especially bloody or clear)
  • Scaling, peeling, or flaking of the nipple or breast skin
  • Sudden change in breast size or shape
  • Inverted nipple
  • A lump or swelling under the arm

Learn more about how to tell if a breast lump is cancerous and the signs of healthy breasts.

Breast Cancer Stages Explained

Stage 0: Carcinoma in Situ

This is the earliest stage. The cancer cells are confined to the ducts or lobules and have not spread.

Treatment Options:

  • Breast-conserving surgery (lumpectomy)
  • Simple mastectomy (if needed)

Stage 1: Early-Stage Breast Cancer

Cancer has spread to nearby tissue but remains localized. Tumors are generally smaller than 2 cm.

Treatment Options:

  • Lumpectomy or mastectomy
  • Radiation therapy
  • Chemotherapy (in some cases)

Stage 2: Regional Spread

Cancer is growing but has not yet spread to distant organs. It may involve lymph nodes or be between 2 and 5 cm in size.

Treatment Options:

  • Surgery (lumpectomy or mastectomy)
  • Chemotherapy
  • Hormone therapy
  • Targeted therapy

Stage 3: Locally Advanced Breast Cancer

Cancer has spread more extensively to lymph nodes and nearby tissues but not to distant organs.

Treatment Options:

  • Neoadjuvant (pre-surgery) chemotherapy
  • Surgery
  • Radiation therapy
  • Hormone or targeted therapies

Stage 4: Metastatic Breast Cancer

Cancer has spread to distant organs such as bones, liver, or lungs. This is the most advanced stage.

Treatment Options:

  • Chemotherapy
  • Hormone therapy
  • Targeted therapy
  • Palliative care (if needed)

Early detection plays a key role in survival. Learn more about breast cancer survival rates and how regular checkups save lives.

Expert Breast Cancer Care in the Bay Area

At BASS Cancer Center in Walnut Creek, our team of breast cancer specialists offers compassionate, comprehensive care. From diagnosis to treatment, we provide personalized support every step of the way.

Whether you need a diagnostic scan or annual screening, our Imaging Center is equipped with state-of-the-art technology for early detection.

And if you need a trusted provider to help guide you through your health journey, our Primary Care team is here for you.

Take the Next Step Toward Care
Early detection and timely treatment can make all the difference. If you’ve noticed symptoms or received a diagnosis, don’t wait.

Request an appointment today to speak with one of our specialists.

Medical Disclaimer: The information provided in this blog is for educational and informational purposes only and is not intended as medical advice, diagnosis, or treatment. BASS Medical Group does not endorse any specific tests, treatments, procedures, or opinions referenced in this content. Individual results may vary. Always consult with your physician or a qualified healthcare provider regarding any medical concerns or before making changes to your health regimen.