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Breast Cancer Types

Breast cancer type

Breast cancer type is categorized by whether it begins in the ducts or lobules, the organs responsible for breast milk production. Medullary carcinoma accounts for 15% of all breast cancer types. This breast cancer type represents 5% of all diagnosis. IPR015525 Breast cancer type 2 susceptibility protein Header EBIDatabasesInterPro Search Open in usermanual InterPro: " /> Jump to: InterProScan Databases Documentation FTP site Help Click on the icon for context sensitive help from the user manual. The breast cancer type 2 susceptibility protein (BRCA2) is a breast tumour suppressor with a potential function in the cellular response to DNA damage. Some breast cancer types express one or more of these proteins on their cell surface, while others express none. Media Relations Contacts Online Press Kit Rumors, Myths, and Truths Glossary About the American Cancer Society Breastfeeding, Other Factors May Affect Risk of Breast Cancer TypeAtlanta 2008/08/25 -Factors such as age at menopause as well as a woman?s breastfeeding practices can influence her risk of developing certain types of breast cancer.

The investigators found that reproductive risk factors varied considerably by breast cancer subtype. Their analysis included 1,023 women with breast cancer whose cells express the estrogen and progesterone receptors (called luminal cancers), 39 women with HER2-overexpressing breast cancer, and 78 triple-negative cases (no expression of estrogen, progesterone, or HER2 receptors). The study also included 1,476 women without breast cancer. ? They added that additional studies on the causes of breast cancer subtypes are needed to better understand the biology of the disease. Learn more about our commitment to providing complete, accurate, and private breast cancer information. The study?s results suggest that there are distinct and separate hormonal risk factors associated with different subtypes of breast cancer. Women with what is referred to as "triple-negative" breast cancer are more likely than other women with breast cancer to experience a relapse, a new study by Canadian researchers shows. Despite having a high risk of early recurrence, the study indicates that triple-negative breast cancer patients who remain disease-free for eight years are unlikely to die of breast cancer and may be "cured" of their disease.

Breast Feeding Will Lowers Risk Of Breast Cancer

Breastfeeding for 6 months or longer was associated with a lower risk of luminal cancer as well as triple-negative cancer, a type that can be particularly aggressive and difficult to treat. Understanding the specific type of breast cancer can help you ask better questions and work with your physicians to get the best breast cancer treatments. For more information on the types and stages of breast cancer, watch Beyond the Shock®. Medullary carcinoma accounts for 15% of all breast cancer types. Infiltrating lobular carcinoma is a type of breast cancer that usually appears as a subtle thickening in the upper-outer quadrant of the breast. Making up about 2% of all breast cancer diagnosis, tubular carcinoma cells have a distinctive tubular structure when viewed under a microscope. Typically this type of breast cancer is found in women aged 50 and above. Inflammatory breast cancer is a rare and very aggressive type of breast cancer that causes the lymph vessels in the skin of the breast to become blocked.

Breast Cancer Risk

The study’s results suggest that there are distinct and separate hormonal risk factors associated with different subtypes of breast cancer. Amanda Phipps, a predoctoral research associate at the Fred Hutchinson Cancer Research Center in Seattle, and her colleagues conducted a study to better understand the specific risk factors for the subtypes of breast cancer, which are classified by expression of the estrogen receptor, the progesterone receptor, and the HER2 receptor. The investigators found that reproductive risk factors varied considerably by breast cancer subtype. Breastfeeding for 6 months or longer was associated with a lower risk of luminal cancer as well as triple-negative cancer, a type that can be particularly aggressive and difficult to treat. Both late age at menopause and use of estrogen plus progestin hormone therapy were associated with an increased risk of luminal disease. Finally, no differences in risks associated with number of children or the age when a woman first gave birth were observed by subtype. The study authors concluded that their results indicate that "certain reproductive factors may have a greater impact on risk of certain molecular subtypes of disease compared to others. Despite having a high risk of early recurrence, the study indicates that triple-negative breast cancer patients who remain disease-free for eight years are unlikely to die of breast cancer and may be "cured" of their disease. Insulin resistance, hyperinsulinemia, and changes in the signaling of growth hormones and steroid hormones associated with diabetes may affect the risk of breast cancer. Despite many proposed potential pathways, the mechanisms underlying an association between diabetes and breast cancer risk remain unclear, particularly because the 2 diseases share several risk factors, including obesity, a sedentary lifestyle, and possibly intake of saturated fat and refined carbohydrates, that may confound this association. Although the metabolic syndrome is closely related to diabetes and embraces additional components that might influence breast cancer risk, the role of the metabolic syndrome in breast carcinogenesis has not been studied and thus remains unknown.

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Breast Cancer Info

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Breast cancer is the most common form of cancer in women and, following lung cancer, it is the second leading cause of cancer death among females. In the year 2004 some 186,772 new breast cancer cases were reported by the American Cancer Society and this number appears to be going up on a yearly basis.

It is also worthy of note that breast cancer is not restricted solely to women and that more than 1,800 men contracted the disease in 2004 and that 362 men died of breast cancer that year.

Women’s breasts are complicated pieces of machinery comprising glands, fat and connective fibrous tissue. Each breast has a number of lobes which are split into lobules and end in the milk glands and there are also a large number of tiny ducts from the milk glands which connect together and culminate in the nipple.

Eight out of ten breast cancer cases start in these ducts in a condition called infiltrating ductal cancer. It is also relatively common for breast cancer to develop in the lobules where it is known as lobular cancer. Other forms of cancer are merely known as inflammatory breast cancer.

Changes such as pre-cancerous changes (called ‘in situ’) are also very common in women and are changes which have not yet spread from the place in the breast where they were originally spotted. When these changes occur within the ducts then the condition is known as ductal carcinoma in situ or DCIS and where changes are found in the lobules they are called lobular carcinomas in situ or LCIS.

The most serious form of breast cancer is metastatic cancer which involves the spread of cancer from its original site of growth. It usually metastasizes into the lymph nodes under the arms or above the collarbone on the same side of the body as the cancer which leads to pain and swelling as the lymphatic drainage system becomes compromised. Other quite common sites of breast cancer metastasis include the brain, liver and bones.

Excluding the obvious factor of gender, age is a very important factor when considering the chances of getting breast cancer. Despite the fact that breast cancer can appear at any age the risk of getting it certainly rises as you get older. A healthy woman aged 30 will usually have a 1 in 280 chance of getting breast cancer by the time she reaches 40. However, this then increases to a probable 1 in 70 chance of developing breast cancer when that same women is in her forties.

The risk factor for breast cancer is also affected by family history with the risk being at its highest when you have a close relative (such as an aunt or mother) who has developed cancer of the breast at a young age.

Although it has yet to be confirmed, there is believed to be a cancer gene which can be passed down from mother to daughter.

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