Hyperplasia - Definition

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Hyperplasia can be either the development of a quantity of constituent cells of a tissue or organ which is too large, or to the formation of an abnormal tissue in the middle of normal tissue. Thus, hyperplasia can affect various organs such as the tonsils in cases of angina, the prostate in men in cases of benign prostatic hyperplasia, and the adrenal glands in cases of congenital adrenal hyperplasia.