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===Pathogenesis===
===Discovery===
Most breast cancers are epithelial tumors that develop from cells lining ducts or lobules; less common are nonepithelial cancers of the supporting stroma (eg, angiosarcoma, primary stromal sarcomas, phyllodes tumor).<ref name = kk> Breast Cancer. Merck Manual (2015) http://www.merckmanuals.com/professional/gynecology-and-obstetrics/breast-disorders/breast-cancer Accessed on January 18, 2016</ref>
*The oldest evidence of cancer is discovered in the Egyptian literature and dates back to about 3000 BC. The textbook is called the 'Edwin Smith Papyrus' and describes 8 cases of tumors of the breast that were removed by [[cauterization]] with a tool called the fire drill. The writing says about the disease, “There is no treatment.<ref>{{cite web
*90–95% of all breast cancers in women occur sporadically.
  | title = The History of Cancer
*Breast cancer pathogenesis in combination with exogenous factors such as diet, alcohol and pollution, as well as endogenous factors such as estrogens and progesterone exposures contributes to it.
  | work = [[American Cancer Society]]
 
  | date = 2002-03-25
===Genetics===
  | url = http://www.cancer.org/docroot/CRI/content/CRI_2_6x_the_history_of_cancer_72.asp?sitearea=CRI
Five to ten percent of all breast cancers arise from germ-line mutations in breast cancer susceptibility genes such as BRCA1, BRCA2, p53 and PTEN.<ref name="pmid24665149">{{cite journal| author=Abdulkareem IH| title=Aetio-pathogenesis of breast cancer. | journal=Niger Med J | year= 2013 | volume= 54 | issue= 6 | pages= 371-5 | pmid=24665149 | doi=10.4103/0300-1652.126284 | pmc=PMC3948957 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24665149  }} </ref>
  | accessdate = 2006-10-09 }}</ref>  
The BRCA1 gene is located on the long arm of chromosome 17, while BRCA2 is located on the long arm of chromosome 13. Gene-positive patients have an 80% risk of developing breast cancer especially in the pre-menopausal age group.
===Landmark Events in the Development of Treatment Strategies===
*The HER-2/neu proto-oncogene amplified and over-expressed in 20–30% of invasive breast cancers, and is associated with poorer outcome and shortened survival.
*In 1761, Giovanni Morgagni of Padua became the first to perform an autopsy to relate the illness to the pathology.
 
* The Scottish surgeon John Hunter (1728-1793) suggested that cancer could be removed if tumor had not invaded nearby tissue and was 'moveable'.
===Associated Conditions===
*In 1700s, John Hunter, the Scottish surgeon suggested that tumors grow from lymph constantly thrown out by the blood.
 
*In 19th century, Rudolf Virchow became the first to correlate the illness to microscopic pathology.
===Gross Pathology===
*Zacutus Lusitani (1575-1642) and Nicholas Tulp (1593-1674), 2 doctors in Holland, publicized their work in 1649 and 1652 respectively that concluded that breast cancer was contagious based on their observation of the tumor in the members of the same household.
 
*In the 1990s, BRCA1 and BRCA2 genes were associated with development of breast cancer for first time.
===Microscopic Pathology===
*In 1713, Bernardino Ramazzini, an Italian doctor, reported the relatively high incidence of breast cancer in nuns. This observation made it a clear association between breast cancer and role of hormones.
*In late 1960s, modern mammography methods were developed.
*In 1976, mammography became officially recommended by the American cancer society.

Revision as of 20:59, 23 January 2016

Discovery

  • The oldest evidence of cancer is discovered in the Egyptian literature and dates back to about 3000 BC. The textbook is called the 'Edwin Smith Papyrus' and describes 8 cases of tumors of the breast that were removed by cauterization with a tool called the fire drill. The writing says about the disease, “There is no treatment.”[1]

Landmark Events in the Development of Treatment Strategies

  • In 1761, Giovanni Morgagni of Padua became the first to perform an autopsy to relate the illness to the pathology.
  • The Scottish surgeon John Hunter (1728-1793) suggested that cancer could be removed if tumor had not invaded nearby tissue and was 'moveable'.
  • In 1700s, John Hunter, the Scottish surgeon suggested that tumors grow from lymph constantly thrown out by the blood.
  • In 19th century, Rudolf Virchow became the first to correlate the illness to microscopic pathology.
  • Zacutus Lusitani (1575-1642) and Nicholas Tulp (1593-1674), 2 doctors in Holland, publicized their work in 1649 and 1652 respectively that concluded that breast cancer was contagious based on their observation of the tumor in the members of the same household.
  • In the 1990s, BRCA1 and BRCA2 genes were associated with development of breast cancer for first time.
  • In 1713, Bernardino Ramazzini, an Italian doctor, reported the relatively high incidence of breast cancer in nuns. This observation made it a clear association between breast cancer and role of hormones.
  • In late 1960s, modern mammography methods were developed.
  • In 1976, mammography became officially recommended by the American cancer society.
  1. "The History of Cancer". American Cancer Society. 2002-03-25. Retrieved 2006-10-09.