Breast cancer can be categorised into distinct categories and subtypes based on the aetiology, aggressiveness, and treatment response. It's critical to identify the specific form of breast cancer so that treatment can be tailored to achieve the greatest potential result.
Breast cancer can start in a variety of places in the breast, including the ducts, lobules, connective tissue between the breasts, and, in some cases, the armpit area, where lymph nodes are situated.
The treatment for different types of breast cancer is determined by the site of origin, the extent of invasion (spread), and the tumour’s reliance on hormones like oestrogen or progesterone for growth.
- The vast majority of breast cancers are carcinomas. Carcinomas are cancers that begin in the cells that line the insides of organs or tissues.
- Breast tumours that have not spread to the surrounding tissue are called in-situ cancers, and they are easier to treat.
- Cancers that spread from the breast ducts or glands into the breast tissue are known as invasive breast cancers.
- Breast tumours that have progressed to other organs or sections of the body, such as the lungs, bones, liver, or brain, are known as metastatic.The return/relapse of breast cancer following a disease-free time in a treated patient is referred to as recurrent breast cancer.