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| tissue growth based on an increase in cell size |
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| abnormal tissue growth in which the cell and tissue organization is disrupted; may be an early stage in cancer development. |
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| growing mass of tissue created by an abnormal process in which cells proliferate in an uncontrolled, relatively autonomous fashion, leading to a continual increase in the number of dividing cells; may be either benign or malignant; aka tumor. |
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| relatively undifferentiated type of epithelial cell whose proliferation gives rise to cells that are more specialized; division of basal cells in the skin produces more basal cells plus cells that migrate toward the outer layer of the skin, gradually differentiating into flattened squamous cells. |
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| tumor that grows only locally, unable to invade neighboring tissues or spread to other parts of the body. |
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| spread of tumor cells from one part of the body to another via the bloodstream or other body fluids. |
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| a malignant tumor (cancer) arising from the epithelial cells that cover external and internal body surfaces. |
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| any cancer arising from a supporting tissue, such as bone, cartilage, fat, connective tissue, or muscle. |
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| cancer of blood or lymphatic origin in which the cancer cells reside mainly in the bloodstream rather than growing as solid masses of tissue. |
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| percentage of people who are still alive five years after diagnosis of a disease. |
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| any mass of tissue that arises from the wall of a hollow organ and protrudes into the lumen. |
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| doctor who specializes in diagnosing disease by examining tissues and cells with a microscope. |
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| assignment of numerical grades to tumors based on differences in their microscopic appearance; higher grade cancers tend to grow and spread more aggressively and be less respnsive to therapy than lower-grade cancers. |
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| estimate of how far cancer has progressed based on a tumor's size and extent of spread at the time of diagnosis. (see TNM system). |
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