Sclerosing Lymphocytic Lobulitis
Also called Sclerosing lymphocytic mastitis, Diabetic mastopathy
This is a rare, harmless breast change that can feel like a hard lump and is often linked to autoimmune conditions like diabetes.
What it is
Sclerosing lymphocytic lobulitis is a harmless but sometimes uncomfortable condition where fibrous tissue in the breast becomes dense and inflamed. It's thought to be related to the body's immune system, which is why it's often seen in women with certain autoimmune conditions. The lumps can be large and very hard.
How common it is
This is a rare finding in the breast. It is mainly found in people with autoimmune conditions, particularly type 1 diabetes.
What you may notice
You might feel one or more firm or hard lumps in your breast that are usually not tender. The lumps can be in one or both breasts and may feel like they are fixed in one spot.
What can contribute
This condition is strongly linked to having an autoimmune disorder, especially long-standing type 1 diabetes. It is sometimes seen in people with other autoimmune issues like lupus or thyroid conditions.
How it is usually checked
Because this can look like other serious breast changes on a mammogram or ultrasound, your provider will likely recommend a core needle biopsy. A biopsy is the only way to know for sure what the lump is. This involves taking a small sample of tissue to be examined under a microscope.
Does this change my long-term risk?
Sclerosing lymphocytic lobulitis is a benign, or harmless, condition. It does not change your long-term breast health risk.
Comfort and everyday care
- Warm compresses may help soothe any discomfort in the area.
- Wearing a comfortable, supportive bra can reduce tenderness.
- Some women find that managing stress through activities like meditation or gentle yoga helps them feel better overall.
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 feel any new lump or area of firmness in your breast.
- An existing lump changes in size or feel.
- You notice pain that is new or does not go away.
- The skin over the lump becomes red, dimpled, or swollen.
Related reading
This is education, not a diagnosis. Nothing here replaces an exam, imaging, or a conversation with your own provider.
