What does cancer look like inside the breast? 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 part of the breast is cancer usually found? Most breast cancers develop in the upper outer quadrant of the breast, closest to the armpit. This is because this area has a lot of glandular tissue.
What do signs of breast cancer look like? Some common, early warning signs of breast cancer include: Skin changes, such as swelling, redness, or other visible differences in one or both breasts. An increase in size or change in shape of the breast(s) Changes in the appearance of one or both nipples.
What is found inside the breast? The lobes, lobules, and bulbs are all linked by thin tubes called ducts. These ducts lead to the nipple in the center of a dark area of skin called the areola. Fat fills the spaces between lobules and ducts. There are no muscles in the breast, but muscles lie under each breast and cover the ribs.