Breast cancer is defined as Stage 1 when it's evident but confined solely to the area where abnormal cell division began—in other words, it's growing but hasn't spread. Stage 1 cancer is subdivided into Stages 1A and 1B. When detected at this early stage, treatment is usually very effective and the prognosis for is good.
The stage of the cancer helps you and your doctor:. Breast cancer stage is usually expressed as a number on a scale of 0 through IV — with stage 0 describing non-invasive cancers that remain within their original location and stage IV describing invasive cancers that have spread outside the breast to other parts of the body. Your pathology report will include information that is used to calculate the stage of the breast cancer — that is, whether it is limited to one area in the breast, or it has spread to healthy tissues inside the breast or to other parts of the body.
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If you have been recently diagnosed, we will review your pathology to confirm you have received the correct diagnosis and staging information, and develop a personalized treatment plan. If you have a recurrence, we will perform comprehensive testing and identify a treatment approach tailored to your needs. Our cancer doctors use a variety of diagnostic tests to evaluate breast cancer and develop the appropriate treatment plan for you. At stage 0, the breast mass is noninvasive, and there is no indication that the tumor cells have spread to other parts of the breast or other parts of the body.
The stage of cancer indicates the size of the tumor of abnormal cells and whether or not those cells are contained to the place of origin. The most common type of breast cancer is ductal carcinoma in situ DCISindicating the cancer cell growth starts in the milk ducts. Stage 0 breast cancer,ductal carcinoma in situ DCIS is a non-invasive cancer where abnormal cells have been found in the lining of the breast milk duct.
Stage 1A means that the tumour is 2 centimetres cm or smaller and has not spread outside the breast. Stage 1B means that small areas of breast cancer cells are found in the lymph nodes close to the breast and that:. You might have just the cancerous area removed with a border of normal breast tissue.
What grade is the breast cancer? What size is the breast cancer? Cancer cells are given a grade according to how different they are to normal breast cells and how quickly they are growing.
Cancer cells can travel from the breast to other parts of the body through the blood stream or the lymphatic system. They may travel early in the process when a tumor is small or later when a tumor is large. If breast cancer spreads, the lymph nodes in the underarm area the axillary lymph nodes are the first place it's likely to go. Learn about treatment for invasive breast cancer.
Invasive lobular carcinoma is a type of breast cancer that begins in the milk-producing glands lobules of the breast. Invasive cancer means the cancer cells have broken out of the lobule where they began and have the potential to spread to the lymph nodes and other areas of the body. Invasive lobular carcinoma makes up a small portion of all breast cancers.
The following are treatment options for stage 1 ductal carcinoma and lobular carcinoma. Stage 1 is divided into stage 1A and stage 1B, which doctors consider early stage breast cancer. Your healthcare team will suggest treatments based on your needs and work with you to develop a treatment plan. Breast-conserving surgery is offered if doctors can remove all of the tumour along with a margin of healthy tissue around it and there will still be enough tissue for the breast to look as natural as possible after surgery.