Understanding Symptoms, Causes and Treatment Options for Breast Angiosarcoma

Receiving a diagnosis of breast angiosarcoma can feel overwhelming, especially because it is a rare and aggressive form of cancer. Unlike more common breast cancers that begin in the milk ducts or lobules, angiosarcoma starts in the lining of the blood vessels or lymph vessels. It accounts for less than 1% of all breast malignancies.

This guide provides an overview of the condition to help facilitate an informed discussion between you and your oncology team.

Overview of breast angiosarcoma

Angiosarcoma of the breast is a type of soft-tissue sarcoma. It is generally categorized into two groups:

• Primary Angiosarcoma: This occurs spontaneously in women who have no history of breast cancer, typically between the ages of 30 and 50.
• Secondary Angiosarcoma: This is more common and often develops as a late complication of radiation therapy used to treat a previous breast cancer. It can also be linked to chronic lymphedema (swelling) in the arm or chest.

Because these tumors involve blood vessels, they tend to grow and spread more quickly than typical breast cancers.

Receiving a diagnosis of breast angiosarcoma

The diagnostic process is designed to determine the grade of the tumor and whether it has spread. You may undergo several tests, including:

• Imaging: While mammograms can sometimes miss angiosarcoma, an ultrasound or MRI is often used to get a clearer picture of the breast tissue and blood vessel structure.
• Biopsy: A doctor will remove a small sample of tissue. A pathologist then examines the cells under a microscope to confirm the diagnosis and determine the "grade" (how fast the cells are growing).
• Staging Scans: Because angiosarcoma can travel through the bloodstream, your doctor may order a CT scan or PET scan of the chest and abdomen to ensure the cancer has not moved to other parts of the body.

Treatment options for breast angiosarcoma

Because this cancer is rare, treatment is often aggressive and involves a multidisciplinary team of surgeons and oncologists.

• Surgery: The primary treatment is usually a mastectomy. The goal is to achieve "clear margins," meaning no cancer cells are found at the outer edges of the removed tissue.
• Chemotherapy: Since angiosarcoma moves through the blood vessels, chemotherapy is often recommended to kill any microscopic cells that may have traveled elsewhere.
• Radiation Therapy: For primary angiosarcoma, radiation may be used after surgery to reduce the risk of the cancer returning. However, if the cancer was caused by previous radiation, this option is generally not used.

Side effects of breast angiosarcoma treatment

Treatments for angiosarcoma can be intense, and it is important to monitor how your body responds. Common side effects include:

• Surgical Recovery: Pain, swelling and a limited range of motion in the shoulder or chest area are common following a mastectomy.
• Chemotherapy Symptoms: Depending on the specific drugs used, patients may experience fatigue, hair loss, nausea and a higher risk of infection due to lower white blood cell counts.
• Skin Changes: If radiation is used, the skin may become red, dry or sensitive, similar to a sunburn.

Always report new or worsening symptoms to your care team immediately.

What to take away

An angiosarcoma diagnosis requires a specialized approach. While the news is difficult, being your own advocate is the best way to navigate the journey ahead. Use this information as a starting point for your next appointment.

Consider asking your oncologist:

1. Is this a primary or secondary angiosarcoma?
2. Has this case been reviewed by a sarcoma specialist or a tumor board?
3. What is the goal of the recommended chemotherapy?
4. Are there any clinical trials available for rare sarcomas?

By staying informed, you can work closely with your medical team to make the best decisions for your health and recovery.

Editor's note: This article is for informational purposes only and is not a substitute for professional medical advice, as your own experience will be unique. Use this article to guide discussions with your oncologist. Content was generated with AI, reviewed by a human editor, but not independently verified by a medical professional.

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