Webster's New World Medical Dictionary

polyp
A mass of tissue that develops on the inside
wall of a hollow organ, such as the colon.
polypapilloma tropicum
See 
yaws.
polypectomy
The surgical removal of a polyp.
See also 
polyp.
polyploid
Having three or more full sets of chro-
mosomes. For example, a polyploid brain tumor
cell might have 69 or 92 chromosomes.
polyps
-
and
-
spots syndrome
See 
Peutz
-
Jeghers
syndrome.
polypsis of the colon
See 
familial adenoma-
tous polyposis.
polysomnography
Electronic monitoring of a
sleeping patient to look for abnormalities in sleep
patterns and/or brain waves. Polysomnography cor-
relates electroencephalogram readings with obser-
vation of the patient. Usually, respiration, oxygen
saturation, body position, and other factors are also
measured during polysomnography. See also 
sleep
apnea; sleep apnea, central; sleep apnea,
obstructive; sleep disorders.
polysomy Y syndrome
See 
XYY syndrome.
Pompe disease
An inherited deficiency of the
enzyme alpha-glucosidase which helps the body
break down glycogen, a complex carbohydrate that
is converted to glucose for energy. Without the
enzyme, glycogen builds up in the heart and other
muscles, causing extensive damage. There are sev-
eral different forms of Pompe disease which vary in
severity. Pompe disease is inherited in an autosomal
recessive manner. Also known as type 2 glycogen
storage disease.
polygenes
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