[A preliminary survey of primary hyperparathyroidism in middle-aged and elderly Beijing Chinese].
OBJECTIVE
To study the prevalence of hypercalcemia and primary hyperparathyroidism in middle-aged and elderly Chinese people who live in Beijing.


METHODS
This research was performed in a large elderly population group who came to our hospital for health checkup. The medical histories and relevant data of all the subjects were collected. Serum parathyroid hormone (PTH) concentration was determined in the 83 subjects whose blood calcium level was >or= 2.6 mmol/L. Meanwhile, another 83 of the subjects whose calcium level was < 2.6 mmol/L were chosen randomly as controls.


RESULTS
2451 subjects underwent the investigation. 83 (3.39%) out of the total 2451 subjects were found to have calcium level >or= 2.6 mmol/L, and 5 of them had PTH > 65 ng/L but no causative factors for the elevation. These subjects were thought to have primary hyperparathyroidism and its prevalence was 0.204%.


CONCLUSIONS
The prevalence of primary hyperparathyroidism was 0.204% in the investigated elderly subjects.
Yan
Shuang-tong
ST
The PLA General Hospital, Beijing 100853, China.
Tian
Hui
H
Li
Chun-lin
CL
Zong
Wen-yi
WY
Shao
Ying-hong
YH
Zhong
Wen-wen
WW
Gong
Yan-ping
YP
D000368:Aged; D000369:Aged, 80 and over; D002118:Calcium / Q000097:blood; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D049950:Hyperparathyroidism, Primary / Q000097:blood / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D010281:Parathyroid Hormone / Q000097:blood; D015995:Prevalence
D010281:Parathyroid Hormone; D002118:Calcium