Fibroglandular density is a term that describes the type of tissue in your breast as seen on a mammogram. Your breasts consist of three types of tissue: fibrous connective tissue, glandular tissue, and fatty tissue.

What is Fibroglandular Density?

Fibrous connective tissue is dense and appears white on a mammogram. Glandular tissue is also dense and includes the milk glands and milk ducts in your breasts. Fatty tissue, on the other hand, isn't dense and appears dark or see-through on a mammogram.

Why is Fibroglandular Density Important?

Your fibroglandular density is associated with your breast cancer risk. There's increasing evidence that a higher density means you're more at risk of developing breast cancer. Dense breasts can mask cancer on a mammogram, making it more difficult for healthcare providers to detect abnormal areas.

What are the Common Conditions and Disorders Associated with Fibroglandular Density?

Having dense breasts increases your likelihood of developing breast cancer. The reasons are unclear, but you're at a greater risk compared to someone whose breasts are mainly fatty. Additionally, mammogram technology doesn't always detect cancer in dense breast tissue, which can lead to missed diagnoses.

What Tests Measure Fibroglandular Density?

You'll need a mammogram to show your fibroglandular density. A mammogram is a specialized X-ray that captures an image of the inside of your breasts. Other imaging technologies, such as 3D mammography (breast tomosynthesis), breast ultrasound, breast MRI, and molecular breast imaging (MBI), may also be helpful in detecting cancer.

What Questions Should I Ask My Healthcare Provider?

When discussing your fibroglandular density with your provider, ask questions like:

• How likely am I to develop breast cancer?
• Are my breasts dense?
• How does my breast density affect the results of a mammogram?
• What types of imaging are best for detecting cancer?
• Do I need to consider any type of supplemental screening?
• How often should this imaging be done?

Fibroglandular density is an important aspect of your breast health. Understanding what it means and how it relates to your breast cancer risk can help you make informed decisions about your healthcare. Talk to your provider about your fibroglandular density and ask questions to get a better understanding of what it means for your health.

A Note from Cleveland Clinic

Remember, having dense breasts or high fibroglandular density doesn't mean you're destined for breast cancer. It's just one aspect of your overall breast health. By staying informed and working with your healthcare provider, you can take control of your breast health and make the best decisions for your well-being.