Where in your breast can you notice a lump to know weather is cancer?

Anywhere: Anywhere a lump is found in your breast you should see a md to determine its' status.

Breast masses: Breast lumps can be palpated anywhere. They can be in any quadrant, behind the nipple, or near the axillary region (arm pit). It can be normal breast tissue, fibrocystic, masses that are non-cancerous, or the dreaded cancer. Most cancers are located in the upper outer quadrant. Secondary to age- it is unlikely you have br cancer unless you have a genetic predisposition. See an md to confirm.

See your doc: You should report all new lumps in your breast to your friendly primary care physician.