breast cancer

Invasive mucinous carcinoma of the breast

What is invasive mucinous carcinoma of the breast? Invasive mucinous carcinoma is a type of breast cancer where the tumour cells are surrounded by a thick fluid called mucin. In order to be called mucinous carcinoma, at least 90% of the tumour needs to be made up of mucin. The tumour starts from cells normally …
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Breast cancer

What is breast cancer? Breast cancer is a general term used to describe a group of malignant (cancerous) tumours that develop from cells normally found in the breast. A malignant tumour is made up of abnormal cells that have the ability to invade surrounding tissues and spread to other parts of the body. The most …
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Phyllodes tumour

What is a phyllodes tumour? 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 …
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Invasive lobular carcinoma of the breast

What is invasive lobular carcinoma? Invasive lobular carcinoma is a type of breast cancer. Invasive lobular carcinoma commonly starts from a non-cancerous growth of abnormal breast cells called lobular carcinoma in situ (LCIS). LCIS can be present for months or years before turning into invasive lobular carcinoma. In addition, patients with a previous diagnosis of …
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Ductal carcinoma in situ (DCIS)

What is ductal carcinoma in situ? Ductal carcinoma in situ (DCIS) is a non-invasive type of breast cancer. The tumour starts from specialized epithelial cells in the glands and ducts of the breast. DCIS is called non-invasive because, after careful microscopic examination, cancer cells were found only on the inside of the ducts and glands. …
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Invasive ductal carcinoma (IDC) of the breast

What is invasive ductal carcinoma of the breast? Invasive ductal carcinoma (IDC) is a type of breast cancer and the most common type of breast cancer worldwide. Another name for this type of cancer is infiltrating ductal carcinoma. How is the diagnosis of invasive ductal carcinoma made? The diagnosis of invasive ductal carcinoma is usually …
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Progesterone receptor (PR)

What is a progesterone receptor? Progesterone receptor (PR) is a protein that allows a cell to respond to the actions of the hormone progesterone. After PR protein is made, it stays in the nucleus of the cell. Progesterone hormone that enters the cell can change the behavior of the cell by activating the PR. Not …
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Estrogen receptor (ER)

What is an estrogen receptor? Estrogen receptor (ER) is a specialized type of protein that allows a cell to respond to the hormone estrogen. After the ER protein is made, it stays in the nucleus of the cell. The estrogen hormone that enters the cell can change the behavior of the cell by activating the …
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