Non-cancerous and cancerous breast lumps can be very different from each other when it comes to how they feel during a breast exam and what they look like in imaging tests. However, a number of benign breast changes mimic breast cancer , so it sometimes takes further testing to know for sure what's going on in your breast. How a breast mass feels can give a doctor a fairly good idea whether a lump is a breast cancer tumor or a benign mass. Masses in the breast that are cancer are often very firm, like a rock or a carrot, and have an irregular shape and size. They are also often fixed—i.
What Is Breast Cancer?
What Is Breast Cancer? | Breast Cancer Definition
Not all breast cancers are the same. Understand what type of breast cancer you have and how it differs from other types of breast cancer. Once you've been diagnosed with breast cancer, your doctor will review your pathology report and the results of any imaging tests to understand the specifics of your tumor. Using a tissue sample from your breast biopsy or using your tumor if you've already undergone surgery, your medical team determines your breast cancer type. This information helps your doctor decide which treatment options are most appropriate for you. Each breast contains 15 to 20 lobes of glandular tissue, arranged like the petals of a daisy.
Although breast cancer is often referred to as one disease, there are many different types of breast cancer. Breast cancers differ in other ways. They can be non-invasive or invasive. Tumor cells can vary in location milk ducts or lobules and how they look under a microscope. These differences often affect prognosis.
Breast cancer is cancer that develops from breast tissue. Risk factors for developing breast cancer include being female, obesity , lack of physical exercise, drinking alcohol , hormone replacement therapy during menopause , ionizing radiation , early age at first menstruation , having children late or not at all, older age, prior history of breast cancer, and family history. The balance of benefits versus harms of breast cancer screening is controversial. A Cochrane review stated that it is unclear if mammographic screening does more good or harm.