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Removal of tissue or suspensions of cells from living patients through a small needle for diagnostic examination. The removal of tissue or fluid with a needle for examination under a microscope. When a wide needle is used, the procedure is called a core biopsy. When a...
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An abnormal tissue that grows by cellular proliferation more rapidly than normal and continues to grow after the stimuli that initiated the new growth cease. Neoplasms show partial or complete lack of structural organization and functional coordination with the normal...
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The entire integrated system of nerve tissue in the body The brain, brain stem, spinal cord, nerves and ganglia.
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Nerve cell; conducts electrical signals. 1) A type of cell that receives and sends messages from the body to the brain and back to the body. The messages are sent by a weak electrical current. Also called nerve cell. 2) The basic cellular units of nervous tissue. Each...
Glossary All, Item, Recipes starting with N
The clinical subspecialty concerned with the diagnostic radiology of diseases of the central nervous system, head, and neck. The use of medical interventional radiologic techniques in which fluoroscopic imaging is used to guide catheters in blood vessels.
Glossary All, Item, Recipes starting with N
Denoting a procedure that does not require insertion of an instrument or device through the skin or a body orifice for diagnosis or treatment. In cancer, it describes disease that has not spread outside the tissue in which it began.
