RESUMEN
This paper presents a clinical analysis of 11 patients with primary hyperparathyroidism treated by surgical operation during last 13 years from 1963 to 1976 in Korea. For all the cases presented, histopathological diagnosis was confirmed by the surgical specimens. The results of the study were as follows: 1) The sex distribution was 55% in female and 45% in male. 2) The age distribution was from 17 to 65 years in age and the peak age incidence was between 30 to 39 years. 3) The most frequent presenting clinical manifestation was skeletal symptoms with 9 cases (81.8%) and followed by renal symptoms with 5 cases (45.4%). In the series of this study, the skeletal symptom was more common and prominent than the renal symptoms. 4) The initial diagnosis was estabilished by the findings of increased calcium level in serum and decreased phosphorus level adjunct with X-ray examination of bone series. 5) The location of lesion was more common in the right side of parathyroid than the left side. There were no difference between upper and lower parts of parathyroids. 6) Histopathological findings disclosed that 10 of the 11 patients were found at surgery to have a single adenoma and with low grade cancer. 7) surgical excision of parathyroid tumor was performed for all cases.