Normal throid Size

[Lukasiak]

What is the average size of a normal thyroid?

[898]

Two most recent sources are cited below; I will try to find the article which I used for my written project

1) www.ajronline.org/cgi/reprint/186/1/234.pdf


2)English Title: Reference values of thyroid volume in a healthy, non-iodine-deficient Spanish population.
Personal Authors: Maravall, F. J., Gómez-Arnáiz, N., Gumá, A., Abós, R., Soler, J., Gómez, J. M.
Author Affiliation: Endocrinology Service, Ciutat Sanitària i Universitària de Bellvitge, C/ Feixa Llarga s/n, L'Hospitalet de Llobregat, Barcelona, Spain.
Editors: No editors
Document Title: Hormone and Metabolic Research, 2004 (Vol. 36) (No. 9) 645-649

Abstract:
Our aim was to assess reference values of thyroid volume by ultrasonography in healthy adult subjects. We conducted an epidemiological cross-sectional study where 880 subjects were randomly selected from the town census of L'Hospitalet de Llobregat after being invited to participate in our study directly by mail and phone call. We made a clinical history of each subject and determined serum thyrotropin, antiperoxidase antibodies, urinary iodine excretion and thyroid volume by ultrasonography. Subjects with thyroid disease were excluded. We finally studied 268 representative subjects. The reference thyroid volume was median 7.31 ml, mean 8.22 ml (Confidence Interval: 7.75-8.69 ml). In men: median 9.19 ml, mean 9.87 ml (CI: 9.09-10.65 ml); in women: median 6.19 ml, mean 6.57 ml (CI: 6.22-9.92 ml) (p<0.0001). We grouped the subjects into decades, and found that thyroid volume was different (p=0.0034) in males because the younger group had lower volume. We did not find any differences among age groups in women. The mean of the urinary iodine excretion was 154.23 µg/l. We have determined reference values of thyroid volume measured by ultrasonography in our iodine non-deficient population and prepared tables that distribute thyroid volume by sex and age.

[Thypatient]

That's interesting.  Where can we read more about it?

[898]

For women 8 to 18 cubic cm, for men 9 to 20 cubic cm, however the final decision for given individual is based on the average size for the population in the area ( if let say, the majority of residents are having size of 13 cu cm, then 20 cu cm is considered increased size)