Types & Stages | Phoenix CyberKnife Radiation & Oncology Center

Breast Cancer - Types & Stages

The Different Types and Stages of Breast Cancer

At our Phoenix breast cancer treatment center, we’ve served patients with all types and in all stages of the disease. Because not every tumor is cancerous, it is vital that we customize your treatment plan to the exact nature of your cancer. Let’s go over the different types and stages you should know.

Types of Breast Cancer

There are two main types: invasive (spread beyond the initial tumor) and non-invasive (no spreading). Here is the breakdown:

Invasive Ductal Carcinoma: Accounting for 80 percent of all breast cancer diagnoses, IDC begins with a tumor in the milk ducts or lobules and spreads to other parts of the breast. It can eventually spread throughout the body via lymph nodes.

Invasive Lobular Carcinoma: Only about 10 percent of invasive breast cancer cases involve ILC, and it may be more common in women older than 60 who used hormone therapy during menopause.

Ductal Carcinoma in Situ: Although this is a non-invasive type of breast cancer, if left untreated it could develop into breast cancer.

Lobular Carcinoma in Situ: Abnormal cells in the lobules of the breast can cause future problems if not treated properly.

Other types (rare): Phyllodes tumors, inflammatory breast cancer and Paget’s disease of the nipple

Stages of Breast Cancer

Doctors base stages of cancer on the size of the tumor, the number of affected lymph nodes and whether the cancer has spread.

Stage 0: Cancer is non-invasive and remains confined to the breast tissue.

Stage 1 (A and B): Cancer is an invasive type but small and has not spread. Or cancer has spread to the lymph nodes but there is no tumor in the breast.

Stage 2 (A and B): Variations depend on whether there is a tumor, how large it is and how many lymph nodes are infected.

Stage 3 (A and B): Tumor is larger and has spread to multiple lymph nodes but not to other parts of the body.

Stage 4: Cancer has spread throughout the body.

Learn More About Breast Cancer

If you have questions about treatment for these types and stages or about treating breast cancer in men, contact our Phoenix cancer center today.


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Phoenix Cyberknife Radiation Oncology is dedicated to the health and safety of our employees, patients, and their families. With the recent spread of COVID-19 and the height of cold and flu season, it is important to be mindful of not only yourself but others around you as well. These viruses are spread from person to person through coughing, sneezing, contact with contaminated surfaces and close personal contact. If you are experiencing any of the following symptoms: runny nose, dry cough, low-grade fevers or shortness of breath; please contact our office prior to your appointment for further instruction

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