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Breast Cancer

What is a hypoechoic nodule in the breast area?

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March 19, 2010 12:14AM

Breast cancer on ultrasound most often shows up as a solid mass, but not all solid masses are cancerous. In fact, the most common solid mass seen is a benign breast tumor (not cancer) called a fibroadenoma. Fibroadenomas are smooth, firm, round masses made up of fibrous and glandular tissue. These fibrous masses can be removed, if desired, but removal is usually not necessary.

On ultrasound, a solid mass appears as a gray or hypoechoic area. In order to decide if the mass is suspicious enough to require further testing, your radiologist will look at the edges of the mass, called the margins. If the margins are smooth and the mass is round or oval, it is most likely benign (not cancer). If the edges are irregular, then it is possibly cancer and a biopsy is necessary to determine if cancer cells are present.