What does a cancerous breast Tumour look like? A new mass or lump in breast tissue is the most common sign of breast cancer. The ACS reports that these lumps are usually hard, irregular in shape, and painless. However, some breast cancer tumors may be soft, round, and tender to the touch.
What is the most common breast tumor? Invasive ductal carcinoma, also known as infiltrating ductal carcinoma or IDC, is the most common form of breast cancer, accounting for 80% of all breast cancer diagnoses.
Is a tumor in the breast cancer? Breast cancer is a malignant tumor that grows in or around the breast tissue, mainly in the milk ducts and glands. A tumor usually starts as a lump or calcium deposit that develops as a result of abnormal cell growth. Most breast lumps are benign but some can be premalignant (may become cancer) or malignant.
Where are breast cancer tumors located? In women, breast cancer lumps are usually found in the upper outer quadrant of the breast. In men, they’re usually found near the nipple. Regardless of gender, breast cancer can start anywhere there’s breast tissue, from the breastbone to the armpit to the collarbone.