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Node
Node
A swelling, knot or knob.
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Neuroma
A benign but sometimes painful tumor growing on a nerve.
Neutrophil
A mature white blood cell with a three- to five-lobed nucleus.
Night blindness
A reduced ability to see in dim light. May be caused by a vitamin-A deficiency or glaucoma.
Nit
The egg of a louse.
Nocturia
Excessive urination at night.
Node
Nonunion
Failure of the ends of a broken bone to mend.
Nuclear scanning
An imaging procedure that views various parts of the body by injecting a very small dose of a radioactive substance into a vein.ÿ Different isotopes concentrate in different organs, and these concentrations are displayed.
Neuroectoderm
The region of the embryo that eventually develops into the nervous system.
Nuclear medicine
The branch of medicine that deals with the use of radioisotopes in therapy and diagnosis.
Neuro-oncologist
An physician who specializes in treating patients with brain tumors, and/or the consequences of cancer upon the nervous system. The physician may be a trained neurologist, oncologist or neurosurgeon.
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