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General increase in bulk of a part or organ, not due to tumor formation. Use of the term may be restricted to denote greater bulk through increase in size, but not in number, of the individual tissue elements. See also hyperplasia.hypertrophia; [hyper- + G. trophe, nourishment]
adaptive h. thickening of the walls of a hollow organ, like the urinary bladder, when there is obstruction to outflow.
benign prostatic h. nodular hyperplasia of prostate
compensatory h. increase in size of an organ or part of an organ or tissue, when called upon to do additional work or perform the work of destroyed tissue or of a paired organ.
compensatory h. of the heart thickening of the walls of the heart in response to vascular, valvular, other heart disease, or athletic conditioning.
complementary h. increase in size or expansion of part of an organ or tissue to fill the space left by the destruction of another portion of the same organ or tissue.
concentric h. thickening of the walls of the heart or any cavity with apparent diminution of the capacity of the cavity.
eccentric h. thickening of the wall of the heart or other cavity, with dilation.
endemic h. enlargement of the calcaneus preceded by fever and pain in the heel, reported from the Gold Coast (now Ghana) and in Taiwan among the indigenous population.
false h. pseudohypertrophy
functional h. physiologic h
giant h. of gastric mucosa Ménétrier's disease
hemangiectatic h. Klippel-Trenaunay-Weber syndrome
lipomatous h. lipomatous infiltration
numerical h. hyperplasia
physiologic h. temporary increase in size of an organ or part to provide for a natural increase of function, such as the kind that occurs in the walls of the uterus and in the mammae during pregnancy.functional h;
quantitative h. hyperplasia
simple h. increase in size of cells.
simulated h. increased size of a part due to continued growth unrestrained by attritions, as is seen in the case of the teeth of certain animals when the opposing teeth have been destroyed.
true h. an increase in size involving all the different tissues composing the part.
vicarious h. h. of an organ following failure of another organ because of a functional relationship between them; e.g., enlargement of the pituitary gland, after destruction of the thyroid.
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