Intrauterine growth of normal thyroid.
Gynecol Endocrinol
; 16(6): 427-30, 2002 Dec.
Article
in En
| MEDLINE
| ID: mdl-12626028
ABSTRACT
In this study we describe fetal thyroid growth during gestation and establish normal reference values using a simple linear ultrasound measurement of the thyroid. A total of 1180 normal singleton pregnancies, with no known risk factors for thyroid disorders, were enrolled from 12 to 39 weeks of gestation. The thyroid antero-posterior diameter was measured on a transverse axial plane through the fetal neck. The best fit regression was a power equation thyroid diameter = 0.2412 weeks(1.0278) (r(2) = 0.55). The percentiles smoothed curves were calculated for each week. In conclusion, the results of the present study support previous findings that the fetal thyroid grows between 12 and 39 weeks of gestation with a steepest increase during the second trimester, that is when the fetal thyroid becomes functionally active. The normal ranges of this simple index of thyroid growth can be useful both as screening and for the clinical evaluation of pregnant patients with thyroid disorders.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Thyroid Gland
Type of study:
Diagnostic_studies
/
Risk_factors_studies
Limits:
Female
/
Humans
/
Pregnancy
Language:
En
Journal:
Gynecol Endocrinol
Journal subject:
ENDOCRINOLOGIA
/
GINECOLOGIA
Year:
2002
Document type:
Article
Affiliation country:
Italy
Publication country:
ENGLAND
/
ESCOCIA
/
GB
/
GREAT BRITAIN
/
INGLATERRA
/
REINO UNIDO
/
SCOTLAND
/
UK
/
UNITED KINGDOM