Breast Cancer

Salient Points

• Approximately 670,000 deaths worldwide due to Breast Cancer occurred in 2022. 6.9% of total cancer deaths are due to Breast Cancer.
• In 2022, there were approximately 2.3 million women diagnosed with breast cancer worldwide, making breast cancer the most common form of cancer in women worldwide.
• Around half of breast cancer cases occur in women who have no known risk factors other than their age and sex.
• Breast cancer ranked as the most common form of cancer among women in 157 out of 185 countries during 2022.
• Nearly half of all breast cancer deaths occurred in Eastern, South-Central, and South-Eastern Asia.
• It has an impact on all countries across the globe.
• The major cause of cancer death among women in India was breast cancer, resulting in 98,337 deaths.
• An estimated 0.5% to 1% of all the cases of breast cancer occur in men.

Overview:

Breast cancer causes abnormal growth of cells inside the breast tissues to the point where lumps are formed. These lumps are called tumors. Breast cancer starts to develop inside the milk ducts or the lobules inside the breast. This ensures easier treatment for affected individuals.

• Once the cancer has spread across other body areas, it becomes even more difficult to handle, therefore threatening health.
• Checkups and understanding the body can go a long way in discovering health issues and maintaining health.

The first type is known as the in situ type. This one is not life-threatening and is often identifiable. Ductal carcinoma in situ (DCIS) is a non-invasive type of cancer where cells are restricted to the milk ducts. DCIS is not life-threatening but had the potential to affect life by raising the possibility of cancer in the future. Tumors that produce lumps or thickening can be caused by cancer cell invasion into nearby breast tissue.

Magnitude of the Problem:

It affects women in all countries of the world. It may appear in any age after puberty, although the risk of developing the condition increases with age.

Global data show considerable inequalities in breast cancer patterns in terms of human development status.

1. For example, in nations that are classified as having a very high Human Development Index (HDI), 1 out of 12 women will develop breast cancer, and 1 out of 71 women will die of it.
2. Contrary to this, in countries with a low HDI, though the ratio of the number of women diagnosed with breast cancer in a lifetime is 1 in 27, the ratio of the number of women who die from breast cancer is 1 in 48.

Who is at Risk?

The female sex is at strongest risk of breast cancer risk. Approximately 99% of breast cancers occur in females and 0.5–1% of breast cancers occur in males.

The management of breast cancer in male individuals follows the same principles as in females.

Factors that increase the risk of breast cancer include:

• Increasing age
• Obesity and sedentary lifestyle Alcohol abuse • Tobacco use Family history of breast cancer: One's risk of developing breast cancer increases with a family history of the disease. However, most women diagnosed with breast cancer do not have a family history of this cancer. In fact, the absence of a known family history does not necessarily place a woman at reduced risk.
• Radiation history
• Gynecologic history including: age menstrual periods started, age at first pregnancy Risk factors for breast cancer include: - Early age at onset of menstruation combined with late menopause increases lifetime estrogen exposure
• The therapy of hormones in postmenopausal conditions
• Postmenopausal hormone therapy

In addition, some hereditary genes have high penetrance mutations that increase breast cancer risk, with the most dominant being BRCA1, BRCA2, and PALB-2 genes.

Such risk reduction strategies as removal of both breasts surgically or chemoprevention strategies.

Signs and Symptoms:

In the initial stages, breast cancer does not manifest any symptoms, hence the emphasis laid on early detection.

Significantly, breast cancer often has a set of symptoms, especially in its advanced forms.

Breast cancer symptoms: They include:

• a lump or thickening in the breast, usually without pain Change in size, shape or appearance of the breast
• Dimpling, redness, pitting, and other changes in the skin
• change in the nipple or the skin around the nipple (areola)
• Abnormal or bloody fluid from nipple

People having an abnormal lump in their breast must seek medical attention even if it does not hurt.

Most breast lumps are not cancerous, and they tend to be treated more effectively if they are smaller and if they have not spread to nearby lymph nodes located under the arms. Subsequently, it may be possible for cancerous bearing lymph nodes not to be felt. - After some time, cancer cells spread to different parts of the body, including the lungs, liver, brain, and bones. At the time the cells spread to these areas, new signs related to cancer develop.

Stages:

Staging helps the doctor find out how far the cancer has spread within the breast and to other parts of the body, thus helping them decide on the line of treatment.

• Stage 0 (In Situ): The cancer is confined to the milk ducts or lobules and hasn't invaded surrounding breast tissue. It's analogous to a "weed" still confined to its pot, which has not yet spread beyond its initial space.
• Stage I means the tumour is small and the cancer has not spread to lymph nodes or has spread to only a small number of them.
• Stage II: The tumor is a bit bigger and/or the cancer has spread to a few lymph nodes nearby.
• Stage III: The tumor is larger and/or the cancer has spread to more lymph nodes or to the skin or chest wall. Muscle invasion: If the muscles, in particular, the pectoral muscles, are involved, this indicates a more aggressive/advanced type of breast cancer.
• Stage IV (Metastatic): The cancer has spread to other parts of the body, such as the lungs, liver, or bones. This is where the "weeds" have spread into another garden.

The earlier the stage, the easier to treat.

Treatment:

It will depend upon the type of cancer and how extensively it has spread outside the breast to the lymph nodes (stages II & III) or to other parts of the body (stage IV).

There are many ways that doctors treat breast cancer, and they sometimes use a combination of these methods for the best results. The primary ways of treating breast cancer are:

• Surgery: This involves surgical excision of a tumor. On occasion, only a lump is removed, but sometimes, even the actual breast has to be removed.
• Radiation therapy: This is done with high-energy rays that kill any remaining cancer cells.
• Stereotactic radiosurgery: It is a non-surgical procedure that utilizes a form of radiation rather than making an incision. It is utilized in treating early-stage breast cancer as well as situations that are not surgically feasible, for small-size tumors, in circumstances where tumors are difficult to reach, and in relapsed or spreading tumor situations.
• Chemotherapy: This treatment consists of using medicine to destroy cancer cells in the body.
• Targeted therapy: This uses medicines that attack specific parts of the cells.
• Hormone therapy: This is used for cancers that are affected by hormones. It blocks the hormones, which the cancer cells require for growth.
• Immunotherapy: It works for TNBC and HER2-positive; this process is to directly enhance the body's immune system to identify and attack cancerous cells. Most of the time, it is continued with some chemotherapy/targeted therapies for better results.
• Clinical Trials: New approaches, including cancer vaccines and cellular therapies such as CAR-T cells, are under investigation to improve outcomes.

Treatment by a doctor depends on the kind of cancer and the extent of its spread.

Conclusion:

Breast cancer is one of those challenges that affects so many lives; however, it's important to remember that every single day brings new progress. Researchers constantly work on new and more effective treatments, and the rate of survival is progressively improving. Everyone can contribute to a brighter future by learning more about breast cancer, its early detection, and by supporting people affected. Keep in mind that regular checkups and open conversations with trusted adults make good health possible. If you or someone you know has any questions or concerns regarding breast cancer, please don't hesitate to seek guidance from a doctor or healthcare professional. Jointly, through awareness, support, and ongoing research, we can make a considerable difference in our fight against this type of cancer and ensure healthier lives for all.

FAQs:

Q: What is breast cancer?

A: Breast cancer occurs when certain cells in the breast begin to grow uncontrollably, and form lumps called tumors. It's like “weeds” growing where they should not.

Q: Can boys get breast cancer?

A: It is rare, but yes, boys can get breast cancer too. However, it is much more common in girls and women.

Q: What are some signs of breast cancer?

A: Some signs can be a lump in the breast, changes in the size or shape of the breast, or changes to the nipple. If you notice any changes, tell a trusted adult.

Q: How do doctors find breast cancer?

A: Doctors use different tests, like feeling the breast, mammograms (special X-ray pictures), or ultrasounds, to check for breast cancer.

Q: What happens if someone has breast cancer?

A: There are treatments like surgery, medicine (chemotherapy), and radiation to help get rid of the cancer. Doctors choose the best treatment for each person.

Q: Can eating certain foods prevent breast cancer?

A: Eating healthy foods is good for your overall health, but it does not guarantee you will not get breast cancer. Talking to a doctor is the best way to learn about your risk.

Q: If my grandma had breast cancer, will I get it too?

A: Having a family history of breast cancer can increase your risk, but that does not mean you are guaranteed to develop it. Talk to a trusted adult, like a parent or doctor, if you're worried.

Q: Is breast cancer contagious?

A: No, breast cancer is not contagious. You cannot catch it from someone else.

Q: What can I do to help support someone with breast cancer?

A: You can be a good friend, listen to them, and show you care. You can also participate in events that raise awareness and money for breast cancer research.

Q: Where can I find more information about breast cancer?

A: You can talk to a trusted adult, like a parent, teacher, or school nurse. You can also find information online from reliable sources like the World Health Organization (WHO) or the National Cancer Institute.

Q: Should we panic if we have breast cancer?

A: Absolutely not! It is understandable to feel scared or worried if you or someone you know is diagnosed with breast cancer, but panicking won't help, and there is a lot of reason to be hopeful. Instead of panicking, focus on getting good information, talking to trusted adults, and following the doctor's advice.

Citations:

World Health Organization (WHO), World Cancer Research Fund (WCRF) and PubMed Central (PMC) Source: cancerresearchuk.org