Phyllodes Tumor
A phyllodes tumor is a rare, often fast-growing lump made of two types of breast tissue.
What it is
A phyllodes tumor is a rare growth that forms in the connective tissue of your breast. It gets its name from the Greek word for "leaf," because the cells look like leaves under a microscope. These tumors can grow very quickly, but most are benign, which means they are not a long-term health risk.
How common it is
Phyllodes tumors are very uncommon, making up less than 1% of all breast growths. They are most often found in women in their 40s, but they can occur at any age.
What you may notice
You may feel a firm, smooth lump that is usually painless. A key sign can be that the lump grows noticeably over a period of weeks or months. In some cases, the skin over the lump may look stretched.
What can contribute
Doctors do not know the exact cause of phyllodes tumors. They can happen to anyone, though they are sometimes seen in women who have previously had a common, benign growth called a fibroadenoma.
How it is usually checked
Your provider will likely use a mammogram and an ultrasound to look at the lump. Because a phyllodes tumor can look like other growths, a core needle biopsy is usually needed to check the tissue. Sometimes, the entire lump must be surgically removed to get a clear diagnosis.
Does this change my long-term risk?
Most phyllodes tumors are benign and do not change your long-term breast health risk after they are removed. Some types can come back in the same spot, and a very small number may act more aggressively, which is why your provider will recommend removing the tumor and having regular follow-up visits.
Comfort and everyday care
- After any procedure, follow your provider's instructions for rest and recovery.
- Some women find that stress-reduction practices like meditation or gentle yoga can help with feelings of anxiety.
- A balanced diet full of fruits, vegetables, and whole grains supports your body's overall health and healing.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
When to get it checked
- You discover a new breast lump, especially if it feels like it is growing quickly.
- An existing lump begins to change in size or shape.
- The skin over a lump looks stretched, red, or has veins you can easily see.
- You have any new or unusual nipple discharge.
Related reading
This is education, not a diagnosis. Nothing here replaces an exam, imaging, or a conversation with your own provider.