Symptoms

DCIS doesn't typically have any signs or symptoms. However, DCIS can sometimes cause signs such as:

• A breast lump
• Bloody nipple discharge

DCIS is usually found on a mammogram and appears as small clusters of calcifications that have irregular shapes and sizes.

When to see a doctor

Make an appointment with your doctor if you notice a change in your breasts, such as a lump, an area of puckered or otherwise unusual skin, a thickened region under the skin, or nipple discharge.

Ask your doctor when you should consider breast cancer screening and how often it should be repeated. Most groups recommend considering routine breast cancer screening beginning in your 40s. Talk with your doctor about what's right for you.