Vol 57, No 3 (2006)
Original paper
Published online: 2006-06-28

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The prevalence of incidentaloma - asymptomatic thyroid nodules in the Tricity (Gdansk, Sopot, Gdynia) population

Bartosz Karaszewski, Mateusz Wilkowski, Tomasz Tomasiuk, Małgorzata Szramkowska, Anna Klasa, Łukasz Obołończyk, Piotr Wiśniewski, Wojciech Kosiak, Anna Lewczuk, Monika Berendt-Obołończyk, Krzysztof Sworczak
Endokrynol Pol 2006;57(3):196-200.

Abstract

Introduction: The increased sensitivity of imaging devices raised number of incidentally discovered lesions in various organs of the human body. Thyroid gland is one of them. Reported prevalence of ultrasonographically detected thyroid nodules (incidentalomas) in general population ranges from 5.2 to 67.0%. Our study demonstrated occurrence of this clinical problem in the general population of the Tricity.
Material and methods: 135 healthy adults (95 women and 40 men) were examined. Neck palpation, ultrasonographic examinations of thyroid gland and serum tyreotropin (TSH) level measurement were made.
Results: In 8.9% of examine (12/135) persons nodules were palpable whereas in 14.8% (20/135) they were detectable only in ultrasonographic examination. Altogether thyroid ultrasound and palpation revealed nodules in 23.7% (32/135) of all cases. Multiple nodules were present in 12.0% of the cases. The pathology was more common in the elderly and in women. TSH serum level was within normal range in all cases of incidentaloma with otherwise normal thyroid gland.
Conclusions: Prevalence of thyroid gland nodules (palpation - 8.9% plus ultrasonography - 14.8%) in healthy population of Gdansk, Gdynia and Sopot is close to data reported in southern Finland (27.0%) and Belgium (19.0%), where iodine deficiency is small, like in the Tricity area. The revealed lesions were over two times more frequent in the female population. Most of the nodules were not palpable.

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