The stage of a breast cancer is determined by the cancer’s characteristics, such as how large it is and whether or not it has hormone receptors. The stage of the cancer helps you and your doctor: Show
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. Your doctor will begin to determine this during surgery to remove the cancer and look at one or more of the underarm lymph nodes, which is where breast cancer tends to travel first. He or she also may order additional blood tests or imaging tests if there is reason to believe the cancer might have spread beyond the breast. The breast cancer staging system, called the TNM system, is overseen by the American Joint Committee on Cancer (AJCC). The AJCC is a group of cancer experts who oversee how cancer is classified and communicated. This is to ensure that all doctors and treatment facilities are describing cancer in a uniform way so that the treatment results of all people can be compared and understood. In the past, stage number was calculated based on just three clinical characteristics, T, N, and M. The T (size) category describes the original (primary) tumor:
The N (lymph node involvement) category describes whether or not the cancer has reached nearby lymph nodes:
The M (metastasis) category tells whether or not there is evidence that the cancer has traveled to other parts of the body:
In 2018, the AJCC updated the breast cancer staging guidelines to add other cancer characteristics to the T, N, M system to determine a cancer’s stage:
Adding information about tumor grade, hormone-receptor status, HER2 status, and possibly Oncotype DX test results has made determining the stage of a breast cancer more complex, but also more accurate. “The updated guidelines mean that staging is now catching up to how people are actually treated,” explained Elizabeth Mittendorf, MD, PhD, Rob and Karen Hale Distinguished Chair in Surgical Oncology and director of the Breast Immuno-Oncology Program at the Dana-Farber Cancer Institute, who served on the expert panel that wrote the updated guidelines. “When developing a treatment plan, doctors always consider tumor grade, hormone-receptor status, HER2 status, and the Oncotype DX score, if applicable. So, a woman diagnosed with stage II disease that is triple-negative [estrogen-receptor-negative, progesterone-receptor-negative, and HER2-negative] will have a very different treatment plan than a woman diagnosed with stage II disease that is estrogen-receptor-positive. The staging guidelines now take into account what doctors have been doing all along.” In general, according to experts, the new staging system classifies triple-negative breast cancer (estrogen receptor-negative, progesterone receptor-negative, and HER2-negative) at a higher stage and classifies most hormone receptor-positive breast cancer at a lower stage. You also may see or hear certain words used to describe the stage of the breast cancer:
Sometimes doctors use the term "locally advanced" or "regionally advanced" to refer to large tumors that involve the breast skin, underlying chest structures, changes to the breast's shape, and lymph node enlargement that is visible or that your doctor can feel during an exam. The updated AJCC breast cancer staging guidelines have made determining the stage of a cancer a more complicated but accurate process. So, the characteristics of each stage below are somewhat generalized. A note about staging: The American Cancer Society (ACS) and the National Cancer Institute (NCI) both say that a cancer’s stage doesn’t change after a diagnosis. So, a person who was diagnosed in 2010 with stage II breast cancer and then had the cancer come back in the bones in 2015 technically is considered to have stage II breast cancer with metastatic recurrence to bone. Still, this is not how most people — and even most oncologists — talk and think about cancer. If someone has breast cancer come back in a part of the body away from the breast, the person and doctors usually consider that cancer to be stage IV/metastatic. The reason the ACS and NCI say that a cancer’s stage doesn’t change is so they can follow people over time and keep track of how many people diagnosed with a particular stage of cancer have a recurrence, as well as the type of recurrence. This allows the organizations to compile statistics on cancer outcomes. “It’s confusing, to be sure,” says Brian Wojciechowski, MD, Breastcancer.org medical adviser. “But for the purpose of individual patients and their personal journey and how we make treatment decisions, it doesn’t matter whether you have stage II with metastatic recurrence to bone or stage IV disease. In practice, the terms ‘metastatic’ and ‘stage IV’ are used interchangeably.” At Breastcancer.org, we talk about breast cancer the way most doctors do. So, we do as the American Society of Clinical Oncology does and use the terms stage IV and metastatic interchangeably. We also consider a person who has a metastatic recurrence to have stage IV cancer. What My Patients Are Asking: Explain the New Breast Cancer Staging GuidelinesSep. 17, 2019 Visit episode page for more info Stage 0 is used to describe non-invasive breast cancers, such as DCIS (ductal carcinoma in situ). In stage 0, there is no evidence of cancer cells or non-cancerous abnormal cells breaking out of the part of the breast in which they started, or getting through to or invading neighboring normal tissue. Learn about common treatments for stage 0 breast cancer. Stage I describes invasive breast cancer (cancer cells are breaking through to or invading normal surrounding breast tissue) Stage I is divided into subcategories known as IA and IB. In general, stage IA describes invasive breast cancer in which:
In general, stage IB describes invasive breast cancer in which:
Still, if the cancer is estrogen receptor-positive or progesterone receptor-positive, it is likely to be classified as stage IA. Microscopic invasion is possible in stage I breast cancer. In microscopic invasion, the cancer cells have just started to invade the tissue outside the lining of the duct or lobule, but the invading cancer cells can't measure more than 1 mm. Learn about common treatments for stage IA and IB breast cancer. Stage II is divided into subcategories known as IIA and IIB. In general, stage IIA describes invasive breast cancer in which:
Still, if the cancer tumor measures between 2 and 5 cm and:
it will likely be classified as stage I. Similarly, if the cancer tumor measures between 2 and 5 cm and:
it will likely be classified as stage IA. In general, stage IIB describes invasive breast cancer in which:
Still, if the cancer tumor measures between 2 and 5 cm and:
it will likely be classified as stage I. Learn about common treatments for stage IIA and IIB breast cancer. Stage III is divided into subcategories known as IIIA, IIIB, and IIIC. In general, stage IIIA describes invasive breast cancer in which either:
Still, if the cancer tumor measures more than 5 cm across and:
it will likely be classified as stage IB. In general, stage IIIB describes invasive breast cancer in which:
Still, if the cancer tumor measures more than 5 cm across and:
it will likely be classified as stage IIA. Inflammatory breast cancer is considered at least stage IIIB. Typical features of inflammatory breast cancer include:
In general, stage IIIC describes invasive breast cancer in which:
Still, if the cancer tumor measures any size and:
it will likely be classified as stage IIIA. Learn about common treatments for stage IIIA, IIIB, and IIIC breast cancer. Stage IV describes invasive breast cancer that has spread beyond the breast and nearby lymph nodes to other organs of the body, such as the lungs, distant lymph nodes, skin, bones, liver, or brain. You may hear the words advanced and metastatic used to describe stage IV breast cancer. Cancer may be stage IV at first diagnosis, called de novo by doctors, or it can be a recurrence of a previous breast cancer that has spread to other parts of the body. Learn more at Treatment for Metastatic Breast Cancer. What are the general health questions for the breast/axilla focused interview?General health questions for the breast/axilla focused interview include a description of the breasts, changes in the breasts with menstruation, and date of the last menstrual period. A 58-year-old client says to the nurse, "My saggy breasts embarrass me!" What can the nurse say to this client in response?
Where does breast tissue extend into the axilla?"Breast tissue extends into the axilla." Breast tissue extends superiolaterally into the axilla as the axillary tail or Tail of Spence. The axilla is not the hardest area to feel for changes. The upper outer quadrant and Tail of Spence are the more common places for breast cancer to occur in women.
What is the axillary management guideline for breast cancer?The axillary management guideline is intended to offer practical recommendations and considerations for axillary lymph nodes management in the modern setting of breast cancer treatment.
What does the nurse do during a breast exam?Breast tissue extends into the axilla. d. Breast tissue extends into the axilla. During the breast exam, the nurse palpates a series of lymph nodes. Why is this a part of the breast exam? a. It's not. It's done because the chest area is exposed.
Why do I need to examine my underarms when I perform my breast exam?Be sure to check your underarm and collarbone areas as well as the entire breast. Familiarity is key here. Breasts will normally have some lumps — they're made up of fatty tissues, milk ducts, and blood vessels. When done monthly, you'll be able to check for new lumps or unusual tissues.
Why is the axilla the most common spot for breast cancer?Cancer that travels via the lymphatic system may end up growing inside the lymph nodes. Axillary lymph nodes are in the armpits, which are close to the breasts. Because the axillary lymph nodes are so close, breast cancer usually spreads to them before other lymph nodes.
What is axilla in breast?The main regional nodes of the breast are in the axilla (underarm), but also include those the infraclavicular (under the collarbone), supraclavicular (above the collarbone), and internal mammary (beneath the pectoralis muscle) lymph node chains.
How do you assess breasts and axilla?Method Of Exam
palpate breasts with both the flat of your hand and fingers. follow systematically, in a circular pattern around the nipple or along the radial lines (simulate a clock) or vertical segments and feel the entire breast, including the tail near the axilla. feel the areola and nipple.
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