Although it can spread anywhere, breast cancer spreads to the bones in nearly 70 percent of people with metastatic breast cancer, estimates the Metastatic Breast Cancer Network. Other common sites are the lungs, liver, and brain. About 6 to 10 percent of breast cancers in the United States are diagnosed at stage 4. There can be microscopic cancer cells left behind, allowing the cancer to spread. Most of the time, metastasis occurs after initial treatment is completed.
Metastatic Breast Cancer in the Lungs: Causes, Symptoms, Treatment
Small cell neuroendocrine carcinoma of the breast is a rare tumour with less than 30 cases reported in the literature. The clinicopathological findings of three cases of primary neuroendocrine carcinoma of the breast and a review of the pertinent literature are presented. The morphological and immunohistochemical patterns of this tumour are similar to its pulmonary counterpart. Expression of neuroendocrine markers is inconsistent, so morphology is the mainstay of diagnosis. Size is a very important prognostic factor in this tumour, as in breast carcinomas of the usual type. Small cell neuroendocrine carcinoma SCNC has been described in many extrapulmonary sites including breast, larynx, gastrointestinal tract, prostate, bladder, ovary, and cervix. Reports also suggest that the clinical course of extrapulmonary SCNC is as aggressive as its pulmonary counterpart.
Learn something new every day More Info Small cell carcinoma is a type of cancer that almost always affects the lung. It may also be referred to as oat cell carcinoma and, in some cases, is a mixed cell carcinoma. This cancer is almost always caused by smoking, but exposure to large amounts of asbestos is also a risk factor. Small cell carcinoma usually effects men more than women, and while not a common type of lung cancer , is considered very deadly.
Specific risk factors for Primary Small Cell Carcinoma of Breast are still being researched and characterized; although, middle-aged-to-older women have been predominantly identified with these tumors. It is important to note that having a risk factor does not mean that one will get the condition. A risk factor increases ones chances of getting a condition compared to an individual without the risk factors.