Malignant Breast Cancer Treatments

Breast X-Ray
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A tumor is a scary word, but it actually just means a mass of abnormal tissues. There are two main kinds of tumors: benign, which means the tumor is non-cancerous and malignant, tumors that are cancerous. 

Benign and Malignant Tumors

Doctors may opt to leave a benign tumor alone rather than remove it. If you are experiencing discomfort, irritation or pressure, let your doctor know so that she can plan to remove it for you and improve your comfort.

If a tumor is found to be malignant, you have breast cancer or another form of cancer. Malignant tumors can aggressive and may spread to other surrounding tissues.

A biopsy may be done on a suspicious lump, which can identify whether it is a tumor, and whether it is benign or malignant.

Tumor Levels

Malignant tumors are evaluated and classified according to a designated system based on its severity. Your doctor will evaluate how similar the cells are to healthy cells and the shape and size of the cells. He will also look for indications of how quickly the cells split and multiply. With these factors in mind, the tumor is assigned a grade:

  1. Low Grade: Well-differentiated
  2. Intermediate Grade: Moderately differentiated 
  3. High Grade: poorly differentiated

In this system, 1 is the least severe of cases and most closely resembles normal tissue. High-grade tumors look abnormal under the microscope and will likely be more aggressive and severe.

These grades are completely different than cancer stages and should not be confused. The grade simply helps determine your unique treatment plan. Malignant breast cancer tumors at every grade are successfully treated each day.

Malignant Tumors and Other Cancers

While a malignant tumor may be first identified and diagnosed with breast cancer, it can develop into something else. If a malignant tumor sheds cells into your bloodstream or lymph system, those cells will carry cancer to other parts of the body, which may include:

  • Bone
  • Skin
  • Lungs
  • Liver
  • Brain
  • Lymph nodes


Once a malignant tumor has been diagnosed in the breast, your doctor will recommend a treatment plan tailored to your unique situation. This plan could include surgery, hormone therapy, radiation, and chemotherapy:

  • Surgery: The doctor will remove cancerous tissue from the affected area. How effective surgical procedures are is dependent on the type of cancer and its severity.
  • Hormone Therapy: Medications may be prescribed to help lower hormone levels.
  • Radiation: High-energy rays are used to kill cancerous cells in a specific area. It is typically administered externally, however, there are internal methods as well.
  • Chemotherapy: This therapy includes the use of a chemo agent to kill cancerous cells. You may receive chemotherapy through an infusion directly into your bloodstream. The drugs travel through your body and attack the affected area.

A Word From Verywell

Malignant tumors are serious growths that require serious medical intervention. Regular screenings and annual visits to your doctor will not prevent cancer from developing but will identify cancer early on. Catching the cancer in the early stages is essential for treating it effectively.

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Article Sources
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  1. American Cancer Society. Breast biopsy. Updated October 3, 2019.

  2. American Cancer Society. Breast cancer grades. Updated September 20, 2019.

  3. American Cancer Society. Treating breast cancer.

Additional Reading