Are breast cancer lumps usually big or small? “A tumor won’t be smooth like a cyst. It might be tiny – they’re often felt by a doctor during an exam when they are as small as a half-inch in diameter,” said Tricia Merrigan, MD, breast surgeon with Avera Medical Group Comprehensive Breast Care. “Women often do not find them on their own when they are this small.”
What is the average size of a breast cancer lump? The average size of a tumor is 1 cm when found during regular breast self-exams. The average size of a tumor is 2.62 cm when found by women who do not do self-exams.
Are breast cancer lumps hard or soft? The most common symptom of breast cancer is a new lump or mass (although most breast lumps are not cancer). A painless, hard mass that has irregular edges is more likely to be cancer, but breast cancers can be also soft, round, tender, or even painful.
How can you tell if a lump in your breast is cancerous? While most breast lumps are noncancerous, see a doctor if: you’ve had a lump more than a week or two and it’s not getting smaller. there are other changes to your breast size, shape, or color. the skin on your breast is dimpled or puckered.