The Hoffberger Breast Center at MercyThe Weinberg Center for Women's Health & Medicine at Mercy

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Breast Center:
Clinical Conditions & Program Offerings:
About Breast Cancer

The Hoffberger Breast Center at Mercy

About Breast Cancer

The Hoffberger Breast Center offers a team of specialists who will answer all of your questions and personally guide you through treatment options and into survivorship. Below is some background on breast cancer:

Risk Factors
Prevention
Genetics
Tumor Pathology

 

Risk Factors

The most important risk factors for breast cancer are increasing age and a strong family history of breast cancer. Lifestyle choices can influence a woman’s risk of breast cancer. Factors that can increase the risk are obesity, smoking, lack of exercise, alcohol abuse and use of some hormonal therapies. It is very important that every woman understands her risk so that informed decisions can be made.

Women with an increased risk for breast cancer need to be followed closely with frequent breast exams and mammograms. Options for additional imaging with MRI should be discussed with a physician. There are also medications that reduce the risk for developing breast cancer – Tamoxifen and Raloxifene (Evista™). Some women may be candidates for genetic testing. Women at the greatest risk may be candidates for a bilateral preventive mastectomy.

To learn more about breast cancer risk factors:
National Cancer Institute on Breast Cancer

Lobular Carcinoma in situ (LCIS)
Lobular carcinoma in situ is a misnomer. It is not a cancer. It is a marker for an increased risk for developing breast cancer. Patients with LCIS have an approximately nine-fold increase in their risk for developing breast cancer. In other studies it has been cited to confer a 20 percent risk of developing breast cancer in the 20 years after diagnosis, a one percent per year risk.

For additional information:
National Comprehensive Cancer Network on LCIS
National Cancer Institute on LCIS

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Prevention

Every woman has a baseline risk for developing breast cancer. This is different for every individual, and is dependent on a number of factors, many of which a person has no control over, such as genetic predisposition.

However, there are measures that an individual can take that will minimize their risk within the framework of their background predisposition. The most effective ways to prevent breast cancer are simple changes that anyone can make. Making positive lifestyle choices by maintaining a healthy weight, exercising and avoiding behaviors known to cause cancer (smoking, more than moderate alcohol consumption) are recommended to decrease one’s risk.

Performing monthly self breast exams, getting yearly mammograms starting at the age of 40, and seeing your doctor on a regular basis for clinical breast exams are all recommended by the physicians of The Hoffberger Breast Center.

For women who are at an increased risk of developing breast cancer there are medications that reduce the risk for developing breast cancer – Tamoxifen and Raloxifene (Evista™). Women at the greatest risk may be candidates for a bilateral preventive mastectomy.

Tamoxifen and Raloxifene to Prevent Breast Cancer
Studies have found that women taking Tamoxifen to prevent breast cancer have a reduced risk for at least several years after their treatment ends, according to two studies in the Journal of the National Cancer Institute.  Follow-up of women on the STAR trial (Study of Tamoxifen and Raloxifene) for breast cancer prevention showed persistent benefit after completing the 5 years of treatment, but the long term benefit was stronger for Tamoxifen compared to Raloxifene. 

Tamoxifen may be used for both premenopausal and postmenopausal women. Raloxifene is approved only for use among postmenopausal women for breast cancer risk reduction.  Raloxifene’s safety profile is better than Tamoxifen, especially if women still have their uterus, since the increased risk of uterine cancer seen with Tamoxifen is not reported with Raloxifene. 

Women should have their risk of breast cancer assessed and then discuss with their health care provider to decide if taking Tamoxifen or Raloxifene is appropriate for them. 

To learn more about the prevention of breast cancer:
National Cancer Institute on Breast Cancer Prevention
National Cancer Institute on Tamoxifen
National Cancer Institute on Preventive Mastectomy

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Genetics

Family history can significantly increase the risk of breast cancer. About 30 percent of women may have a family history of breast cancer, but only about 10 percent of women have a strong inherited risk for breast cancer. Genetic testing can be done to determine your individual risk. The Cancer Prevention and Genetic Counseling Service provided through The Prevention and Research Center at Mercy offers a complete evaluation of family history and other factors that may increase the risk of developing breast, ovarian and other cancers.

Several genes, including BRCA1 and BRCA2, have been found to have mutations that can significantly increase the risk of developing breast, ovarian and other cancers. 

Genetic testing or counseling for breast and related cancers may be indicated if:

  • You or a close relative have the same or related cancer (i.e. breast and ovarian)
  • You or a close relative have had breast cancer before age 50
  • You or a close relative have been diagnosed with more than one type of cancer (i.e. breast, ovarian, colon, uterine)
  • You are of Eastern European Jewish ancestry with a family history of breast or ovarian cancer
  • You have a family history of any rare cancer or multiple different cancers 
  • You a have family history of male breast cancer
  • A close relative is known to have a genetic mutation that can increase the risk of cancer.

For women who have an inherited susceptibility to breast cancer such as carrying a mutation in BRCA1 or BRCA2, The Prevention and Research Center holds a monthly support group.

To learn more about hereditary causes of cancer:
National Cancer Institute on Genetics and Breast Cancer

To find out if genetic testing is right for you:
National Cancer Institute on Genetic Testing
Myriad Genetic Test for BRCA1 and BRCA2

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Tumor Pathology

Important terms to understand about the pathology report:

Non-invasive tumor
Tumors that are confined to the ducts are in-situ or non-invasive. This is called DCIS – ductal carcinoma in situ. These tumor cells cannot spread beyond the breast. This represents Stage 0 disease. Please note that LCIS or lobular carcinoma in situ is not a cancer.

Invasive tumor
Tumor cells have spread into the breast tissue outside the duct or gland. These tumors have the ability to spread to lymph nodes or elsewhere in the body. The likelihood of spread outside the breast is determined by numerous factors.

Tumor grade
Pathologists divide tumors into three grades based on their appearance under the microscope (how abnormal the cells look). Grade 1 is well differentiated, grade 2 is moderately differentiated and grade 3 is poorly differentiated. This should not be confused with the stage of the disease.

Hormone Receptor Status (ER and PR)
Normal ducts and lobule in the breast have estrogen receptors (ER) and progesterone receptors (PR) expressed on their surface. If tumor cells have these same receptors, they are called ER positive and PR positive respectively. If they have lost these receptors, they are ER negative and PR negative.

If the tumor is ER or PR positive, the patient is a candidate to receive hormonal agents that block the action of estrogen. The most frequently used hormonal agents are Tamoxifen and Aromatase inhibitors. However, these agents have no role if the tumor is ER and PR negative.

HER2/neu
About 20-30% of breast cancers overexpress a growth factor receptor, called HER2/neu - human epidermal growth factor receptor 2.  The pathologists assess all breast tumors for expression of this receptor by two methods - immunohistochemistry (IHC) or fluorescence in situ hybridization (FISH).  A monoclonal antibody that targets the HER2/neu receptor, called Trastuzumab (Herceptin) is now available to treat these tumors.  Your medical oncologist can review the risks and benefits of this drug with you.

 An excellent overview of the details of what you see in a pathology report:
BreastCancer.org Pathology Report Guide

Oncotype Dx
Oncotype Dx is a molecular profiling test of the tumor, usually performed in patients who have Stage I or Stage II hormone receptor positive breast cancers.  It helps determine the magnitude of benefit of giving chemotherapy in addition to hormonal therapy in this group of patients. It also calculates the risk of relapse at 10 years.

For more information:
National Cancer Institute on Clinical Trial Studying Recurring Breast Cancer
Information on Oncotype Dx Test

Stage of the tumor
Treatment decisions are made in part according to the stage of the cancer. Some other features of the tumor are taken into consideration – the estrogen-receptor (ER) and progesterone-receptor (PR) status, human epidermal growth factor receptor 2 (HER2/neu) status, and the Oncotype Dx result where applicable. Certain patient-related factors include the age, menopausal status, and the general health of the patient.

The stage defines the extent of a cancer in the body. Staging is usually based on the size of the tumor, whether lymph nodes contain cancer, and whether the cancer has spread from breast to other parts of the body.

For additional information:
National Cancer Institute on Staging of Breast Cancer

 


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