Breast Cancer: Types, Incidence, Causes, Risk Factors, Treatment
By Shanaya Maryam on January 24, 2020How to Reduce Breast Cancer
Breast cancer is a type of cancer that starts within the tissues of the breast. It is the common type of cancer affecting many American women who are second to lung cancer that is the cause of cancer death. Breast cancer cam is diagnosed in the median age between the ages of 60 and 65 years. The incidence rate of breast cancer is also high in middle age woman. Statistics reveal that 1 in 8 women are susceptible to developing breast cancer in their lifetime.

How to Reduce Breast Cancer
Types of Breast Cancer
Below are the main types of cancer
Ductal Carcinoma:
It starts in the ductal tubes that regulate milk from the breast tissues to the nipples. This is the most common type of breast cancer.
Lobular carcinoma:
It starts in the milk-producing parts of the breast called lobules. This type of cancer is least reported.
Invasive carcinoma:
- Most of the breast cancers are of adenocarcinomas which are classified on the basis of the microscopic appearance of ducts and lobules.
- Invasive ductal carcinoma frequently affects bone, liver, lung or brain, whereas infiltrating lobular carcinoma tends to affect GI tract, reproductive organs, leptomeninges, peritoneal surfaces and other unusual sites.
Non-invasive carcinoma:
DCIS is commonly diagnosed than lobular carcinoma in the situation (LCIS).
Who Are More Susceptible
Breast cancer not only affects female but it also affects males. This type of cancer in males is of the rare type. It is the largest cause of death in American women after lung cancer.
Causes and Risk Factors
They are a variety of things which cause breast cancer
Endocrine factors:
- Marriages at the late age after 30s and first childbirth after 30 as well as nulliparity increases the risk of developing breast cancer.
- Prolonged usage of HRT (Hormone replacement therapy) and longer use of progestins are the contributable factors of breast cancer.
- Environmental and lifestyle changes also contribute to developing breast cancer in women.
Genomic factors:
BRCA1, include BRCA2, in chromosome 13 as well as 17. Other genes identified are associated with hereditary breast cancer includes TP53, CHK2, ATM and PTEN.
Signs and symptoms
General symptoms
They will be no symptoms visible in the asymptomatic patients until the screening of mammary gland is done.
Local signs and symptoms
There is the presence of a painless palpable lump in the breast is the most common symptom.
Nipple discharge retraction or dimpling oedema of the skin with redness or warmth is a less common symptom.
Palpable lymph nodes are local regional symptom also present.
Systemic metastases signs and symptoms
This symptom depends on the site of metastases, it includes bone pain, breathing difficulty, pain in the abdomen or enlargement of it, mental disturbance, jaundice.
How Breast cancer can be diagnosed
It can be diagnosed through following laboratory and diagnostic tests
Lab tests include :
Tumour markers are used to test cancer antigens or carcinoembryonic antigen.
Liver function tests or alkaline phosphatase are used in the evaluation of metastatic disease.
Diagnostic tests include :
Mammogram (it can be done with or without MR scan of the breast)
Biopsy for pathological review and determination of tumour receptors which include estrogen/progesterone status and HER2 status.
Chest x-ray, chest CT scan, abdominal CT scan or
Ultrasound or MRI scan.
Invasive carcinoma:
- Most of the breast cancers are of adenocarcinomas which are classified on the basis of the microscopic appearance of ducts and lobules.
- Invasive ductal carcinoma frequently affects bone, liver, lung or brain, whereas infiltrating lobular carcinoma tends to affect GI tract, reproductive organs, leptomeninges, peritoneal surfaces and other unusual sites.
- Non-invasive carcinoma: DCIS is commonly diagnosed than lobular carcinoma in the situation (LCIS).
Treatment
Stage 1 and stage 2
Breast-conserving therapy involves removal of part of the breast, evaluation of the axillary lymph node, radiation therapy of the breast lump.

Treatment
Systemic adjuvant therapy includes the administration of systemic therapy followed by definitive local therapy (radiation, surgery, or a combination of these). These therapies are followed if there is no evidence of metastatic disease.
Adjuvant Chemotherapy
This therapy can be used alone or in a combination with adjuvant therapy in breast cancer. The medications which are used are fluorouracil, paclitaxel, doxorubicin, epirubicin, cyclophosphamide, paclitaxel, vincristine and vinorelbine.
Stage 3 (Locally advanced breast cancer)
- This type of cancer refers to breast carcinomas with significant primary tumour and nodal disease, but in which distant metastases cannot be documented.
- The NCCN guidelines addressing the management of locally advanced disease recommend starting chemotherapy with either anthracycline or taxane containing drugs.
- Many patients have successful BCT response to chemotherapy is seen. Adjuvant therapy is prescribed to advanced cancer patients to minimize local recurrences, regardless of the type of surgery used for the individual patient.
Stage 4 (Metastatic breast cancer)
Treatment of this stage includes cytotoxic, biological or endocrine therapy often results in regression of disease as well as improves the quality of life of the patients. If the patient responds to the therapy, the duration of survival is also increased. The most important factor which determines response to endocrine therapy is the presence of estrogen and progesterone in the primary tumour tissue. 50-60% patients with ER-positive tumours and 70-80% of patients with ER and PR-positive response to the hormonal therapy successfully whereas ER-negative tumours respond less than 10% to the therapy.
Pharmacogenetic approach
Skincare
- Follow proper hygiene and keep skin clean and dry.
- Keep skin moisture to prevent chapping of the skin.
- Follow proper hygiene of the nails by not cutting the cuticles.
- Do not expose skin to the harmful radiation of the sun, if moving outwears sunscreen.
- Do not perform activities like washing dishes, gardening, using detergents, or working with any other tools without wearing gloves.
- If any minor injury occurs on the skin, clean it with soap and apply antibiotics ointment to avoid the spread of infection.
Lifestyle Changes
- Follow the proper diet and maintain the duration and intensity of the exercise.
- Take rest while performing an exercise which allows the limb to recover.
- Maintain a healthy weight.
- Garments
- Wear non-constricting garments and it should be well-fitted.
- For air, travelling wear well-supported garments
Additional safety measures
- Avoid standing for a long duration of time
- Avoid sitting crossed legs and sitting for a prolonged time.
- Wear clean and hygienic footwear and hosiery.
- Support at-risk limb with well-fitted garment while performing strenuous activity.
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