Determination of thyroid volume by ultrasonography among schoolchildren in Philippines.
OBJECTIVE
Iodine deficiency is defined by the goiter and the urinary iodine concentration. However, a lack of local thyroid volume reference data resulted in the vague definition of goiter, especially in school-aged children. The aim of this paper was to determine the thyroid volumes by ultrasonography in schoolchildren aged 6 to 12 years living in Cagayan areas in Philippine.


METHODS
Cross-sectional thyroid ultrasonographic data of 158 schoolchildren aged 6-12 years from Tuguegarao and Lagum in Cagayan valley, Philippine were used. Thyroid volumes were compared based on logistic issue and urban and rural area and compared with other previously reported data.


RESULTS
The mean values of thyroid volume in Tuguerago and Lagum were 2.99 ± 1.34 mL and 2.42 ± 0.92 mL. The thyroid size was significantly in association with age (P < 0.00), weight (P < 0.00), height (P < 0.00), and BSA (P < 0.00) by Pearson's correlation. The median thyroid volumes of schoolchildren investigated in this study were generally low compared to international reference data by age group but not by BSA.


CONCLUSIONS
We propose for the first time local reference ultrasound values for thyroid volumes in 6-12 aged schoolchildren that should be used for monitoring iodine deficiency disorders.
Department of Internal Medicine, Kosin University College of Medicine, Busan 602-702, Republic of Korea.
Bu Kyung
BK
Kim
Young Sik
YS
Choi
Chul Ho
CH
Oak
Yo-Han
YH
Park
Jae Hyun
JH
Kim
Dae Jin
DJ
Park
Cindy
C
Mora
Donald
D
Wilson
Eun-Kee
EK
Park