Term
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Definition
| A mass of cells (tumor) that lacks the ability to invade neighboring tissue or metastasize |
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Definition
| A tumor in epithelial tissue |
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Definition
| Tumors that are characterized by undifferentiated, nonfunctional cells of irregular shape and size |
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Definition
| The spreading of tumor cells to distant sites via the blood or lymph |
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Definition
| A tumor that involves connective tissue |
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Definition
| A shortage or low number of erythrocytes or level of hemoglobin in the blood |
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Definition
| The growth or proliferation of blood vessels |
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Term
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Definition
| Agents that cause activation of the immune system |
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Term
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Definition
| Drugs that may be used alone or in combination with surgery or radiation to treat cancer |
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Term
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Definition
| Loss of appetite resulting in weight loss |
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Definition
| A condition of general ill health and malnutrition |
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Term
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Definition
| Any agent known to cause cancer |
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Term
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Definition
| The process by which normal cells are transformed into cancer cells |
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Term
| Computed Tomography (CT) scan |
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Definition
| A tool for imaging tumors by scanning and displaying the object as a series of layers from top to bottom |
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Term
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Definition
| Type of treatment that eliminates a cancer entirely; curative treatment is possible if the tumor is small and localized |
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Term
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Definition
| Cells that are primitive or undifferentiated |
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Term
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Definition
| A local spread in which tumor cells invade adjacent tissues and destroy normal cells |
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Term
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Definition
| A surgical instrument that is inserted into the body through a small incision |
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Term
| Magnetic resonance imaging (MRI) |
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Definition
| A diagnostic tool for imaging tumors in which magnetic fields and radiofrequency (RF) pulses are used to affect the orientation of hydrogen atoms in the tissue. The changes in the energies of the atoms can then be evaluated and translated into an image of the target tissue |
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Term
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Definition
| The death and degradation of living tissue |
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Term
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Definition
| Genes that play a role in causing cancer |
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Term
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Definition
| Viruses that alter host cell DNA |
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Term
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Definition
| Treatment used when a cancer is advanced to reduce the manifestation of the cancer and prolong life |
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Term
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Definition
| Additional problems associated with certain tumor cells |
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Term
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Definition
| Agent, also called an initiating factor, that causes the first irreversible change in the DNA leading to the formation of cancer cells |
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Term
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Definition
| Agents, including hormones and environmental chemicals, that cause a further (secondary) change in the DNA |
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Term
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Definition
| Protective or precautionary measures |
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Term
| Radiofrequency ablation (RFA) |
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Definition
| A procedure in which radio waves generate heat at the end of a probe to destroy malignant cells |
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Term
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Definition
| The spread of cancer cells within body fluids other than blood and lymph and along membranes, usually in body cavities |
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Term
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Definition
| Pathogenic process producing an open crater-like lesion (ulcer) on the skin or mucous membranes |
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Term
| Basal cell carcinoma (BCC) |
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Definition
| The most common form of skin cancer |
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Term
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Definition
| Specialized types of neural cells that carry out a number of functions in the nervous system |
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Term
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Definition
| Tissue that lies beneath the skin |
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