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Lactiferous ducts are ducts that converge and form a branched system connecting the nipple to the lobules of the mammary gland.When lactogenesis occurs, under the influence of hormones, the milk is moved to the nipple by the action of smooth muscle contractions along the ductal system to the tip of the nipple.
Histopathologic types of breast cancer, with relative incidences and prognoses, with "invasive lobular carcinoma" at top right. Invasive lobular carcinoma (ILC) is breast cancer arising from the lobules of the mammary glands. [1] It accounts for 5–10% of invasive breast cancer.
Nuclear grade describes how closely the nuclei of cancer cells look like the nuclei of normal breast cells; the higher the nuclear grade, the more abnormal appearing the nuclei are and the more aggressive the tumor cells tend to be.) PDCIS has an excellent prognosis with long-term survival rates similar to those for EPC. [2]
Predictors associated with worse prognosis of MBC include age younger than 39 years at presentation, tumor invasion of the skin, and squamous cell carcinoma spread to the lymph nodes. The 5-year survival rate for MBC varies by classification, and ranges from 49% in the most deadly classifications to 64%.
Medullary breast carcinoma is a rare type of breast cancer [1] that is characterized as a relatively circumscribed tumor [2] with pushing, rather than infiltrating, margins. It is histologically characterized as poorly differentiated cells with abundant cytoplasm and pleomorphic high grade vesicular nuclei. [ 3 ]
Women who've given birth may be at a lower risk of developing breast cancer later in life, compared to women who have not, research has found. This is likely due to a few factors, including breast ...
Duct ectasia of the breast, mammary duct ectasia or plasma cell mastitis is a condition that occurs when a milk duct beneath the nipple widens, the duct walls thicken, and the duct fills with fluid. This is the most common cause of greenish discharge. [1] Mammary duct ectasia can mimic breast cancer. It is a disorder of peri- or post-menopausal ...
Metastatic breast cancer can be treated, sometimes for many years, but it cannot be cured. [2] Distant metastases are the cause of about 90% of deaths due to breast cancer. [3] Breast cancer can metastasize anywhere in body but primarily metastasizes to the bone, lungs, regional lymph nodes, liver and brain, with the most common site being the ...