Secretory carcinoma is a rare type of breast cancer that usually grows slowly and has a favorable outlook. It is called secretory carcinoma because the tumor cells produce secretions, which can be seen inside the cells and in the spaces between them under the microscope. Almost all secretory carcinomas are driven by a single genetic …
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The Nottingham histologic grade (or modified Scarff-Bloom-Richardson grade) is a system pathologists use to evaluate breast cancer under the microscope. It helps determine the aggressiveness of the cancer and provides important information for planning treatment. The grade is based on how different the cancer cells look from normal breast cells and how quickly they are …
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Invasive mucinous carcinoma is a type of breast cancer in which the tumor cells are surrounded by large pools of a thick fluid called mucin. To be called mucinous carcinoma, at least 90% of the tumor must be made up of mucin. Compared with the more common invasive ductal carcinoma, invasive mucinous carcinoma tends to …
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Phyllodes tumour is a rare type of breast tumour. Most phyllodes tumours will behave like non-cancerous tumours. However, a small number (approximately 10%) will behave like cancer. This behaviour includes the ability to spread through the normal tissue in the breast and to other parts of the body. The entire tumour must be removed surgically …
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Invasive lobular carcinoma (ILC) is the second most common type of breast cancer after invasive ductal carcinoma. It starts in the lobules — the small glands in the breast that produce milk — and grows into the surrounding breast tissue. The term “invasive” means the cancer cells have spread beyond the lobules into nearby tissue. …
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Ductal carcinoma in situ (DCIS) is a noninvasive type of breast cancer that starts in the lining of the breast ducts — the tiny tubes that carry milk from the glands to the nipple. Noninvasive means that all the abnormal cells are confined inside the ducts and have not broken through the duct wall into …
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Invasive ductal carcinoma is the most common type of breast cancer. It starts in the epithelial cells lining the milk ducts of the breast and grows into the surrounding breast tissue. Left untreated, it can spread to other parts of the body, including the lymph nodes, bones, and lungs. The name of this cancer is …
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The progesterone receptor (PR) is a special type of protein found inside certain cells in the body. It belongs to a group of proteins called nuclear hormone receptors, which control how cells respond to hormones. Progesterone receptors specifically respond to the hormone progesterone, which plays a vital role in reproductive health, menstrual cycles, pregnancy, and …
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The estrogen receptor (ER) is a special type of protein found inside certain cells throughout the body. It belongs to a family of proteins known as nuclear hormone receptors, which control how cells respond to hormones. Specifically, estrogen receptors respond to the hormone estrogen, which plays a key role in many important functions within the …
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