Abstract
Ten cases with primary parahyperthyroidism were operated from 1982 to 1990. Bone changes was recognized in two cases and urolithiasis in nine cases. Histological examination of resected parathyroid glands revealed adenoma in six cases, hyperplasia in two, cyst in one and normal findings in one. Preoperative localization of enlarged gland was evaluated by CT, ultrasonography or RI-scintigraphy. All of 4 patients with adenoma of greater than 1cm and only one of 5 patients with enlarged gland from 0.5 to 1cm in size were accurately localized preoperatively. Postoperative follow-up study revealed no evidence of recurrence in nine cases, but the serum calcium level of one case with hyperplasia has remained upper limit of normal value for 5 years after the operation.
