Parathyroid Disease and hyperparathyroidism can be caused by several things... But, most parathyroid problems occur because one parathyroid gland develops into a benign parathyroid tumor. This page describes what causes the parathyroid gland to go bad and grow into a parathyroid tumor (causing hyperparathyroidism).
antecedent noun [C usually pl]. âº something âexisting or âhappening before, esp. as the âcause of an âevent or âsituation: The âbook âdealt with the âhistorical antecedents of the Civil War.
The singular antecedent can be a pronoun such as everybody, someone, anybody, or an interrogative pronoun such as who: 1  with everybody, everyone etc.:  2  Everybody was crouched behind the furniture to surprise me, and they tried to. 3  But I already knew they were there.. 4  Example given by Garner.