meaning

What is non-small cell carcinoma?

Non-small cell carcinoma is a general term doctors use to describe a large group of cancers composed of large, abnormal-looking cells. Most of the time, this term refers to cancers that originate in the lungs, although it can also be used to describe cancers that begin in other parts of the body. About 85% of …
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What is myxoid?

Myxoid is a descriptive term pathologists use to describe tissue that has a gel-like, loose, or mucus-rich appearance when examined under the microscope. The word comes from the Greek myxa, meaning mucus. When tissue is described as myxoid, it means the space between the cells contains a large amount of a soft, jelly-like material, rather …
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Benign: Definition

In medicine, the word benign describes something that is not cancer. Most often, it refers to abnormal growths or tumors — abnormal masses of cells — that stay in place and do not spread to other parts of the body. Pathologists, who are the doctors who examine tissues and cells under a microscope, use the …
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Carcinoma: Definition

Carcinoma is a type of cancer that starts in epithelial cells — the cells that line the surfaces and cavities of the body, both inside and out. Epithelial cells cover the skin, line the digestive tract, and form the inner surfaces of organs such as the lungs, breasts, prostate, and cervix. Because epithelial cells are …
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What is a tumor?

In pathology, the term tumour describes an abnormal growth of cells in the body. Normally, cells grow and divide in a controlled way. However, tumour cells multiply uncontrollably, forming a lump or mass. Tumours can develop anywhere in your body and can vary significantly in their appearance and behaviour. How are tumours categorized? Tumours are …
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