PMID: 16526200Mar 11, 2006Paper

The volumes of the thyroid gland in adults aged 18-65 years in the Czech Republic--determination of the norms

Vnitr̆ní lékar̆ství
M DvorákováV Zamrazil

Abstract

In the areas with moderate iodine deficit the sonographic examination of thyroid gland is a precious method of precise determination of its volume. The objective of the work was the sonographic examination of males and females aged 18-65 years and to determine the norms of the volumes of thyroid gland. In total, by random sampling, there were sonographically examined 3 416 adults in 11 areas of the Czech Republic; there was chosen a set of 971 females and 681 males whose iodinuria level in first morning urine sample was equal or higher than 100 microg/l. This set was divided according to sex and into the age categories in 5-year interval. The measurement of 3 dimensions of the thyroid gland was determined by Medison-Kretz SA 600 sonographic device with the use of 7.5 MHz linear probe for the depth and width measurement and 3.5 MHz probe was used for the lengths measurement. The volume was determined for each lobe individually using Brunn's formula: V (ml) = 0.479 x length x depth x width. Our results imply the age-related increase of the volume of thyroid gland at both sexes (F-ratio = 1.99, p < 0.0001). At men and women the volume of thyroid gland fluently increases to the 30th year equally, from 30 years to 55 years it increa...Continue Reading

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