What is nodular asymmetry in the breast?
In mammography, an asymmetry is an area of increased density in 1 breast when compared to the corresponding area in the opposite breast. Most asymmetries are benign or caused by summation artifacts because of typical breast tissue superimposition during mammography, but an asymmetry can indicate breast cancer.
What is a breast nodule on ultrasound?
A breast lump is a mass that develops in the breast. Breast lumps vary in size and texture and may cause pain. Some are not found until a physical or imaging exam. Most breast lumps are benign (non-cancerous). Your doctor will likely perform a physical exam to evaluate a breast lump.
What percentage of breast asymmetry is cancer?
Developing asymmetry has a moderate likelihood of malignancy, seen on 12.8% of screening and 26.7% of diagnostic mammograms (5). In a study from our institution, the overall malignancy rate of developing asymmetries in the screening and diagnostic populations was 15.4% (6).
What does it mean when a nodule found on mammogram?
A mass (lump) with a smooth, well-defined border is often benign. Ultrasound is needed to see and describe the inside of a mass. If the mass contains fluid, it is called a cyst. A mass (lump) that has an irregular border or a starburst appearance (spiculated) might be cancerous, and a biopsy is usually recommended.
Are breast nodules usually cancerous?
As we have seen, most breast lumps are benign, non-cancerous cysts or tumors. Although they may require surgical removal to prevent their interfering with normal breast function, they will not invade surrounding tissue; they are not life threatening.
How common are breast nodules?
Benign breast lumps in women are common. Up to half of all women will experience fibrocystic changes that cause noncancerous breast lumps at some point in their lives.
Should I worry about asymmetry in my breast?
Breast asymmetry is usually no cause for concern. However, if there’s a large variation in asymmetry or if your breast density suddenly changes, this could be an indication of cancer.