Changes in pediatric thyroid sonograms in or nearby the Kanto region before and after the accident at the Fukushima Daiichi nuclear power plant

Endocrine Journal

Koichi Ito¹  Hidemi Ohye¹  Ai Yoshihara¹  Koji Mukasa¹  Jaeduk Yoshimura Noh¹  Kiminori Sugino¹  Kenji Iwaku¹  Miho Suzuki¹  Yo Kunii¹  Masako Matsumoto¹  Nami Suzuki¹  Natsuko Watanabe¹  Tosiaki Kameda¹  Eiji Sasaki¹  Sakiko Kobayashi¹ 

[1] Ito Hospital, Tokyo 150-8308, Japan

关键词: Thyroid sonograms;    Pediatric;    Thyroid;   

DOI  :  10.1507/endocrj.EJ14-0032

学科分类：内分泌与代谢学

来源: Japan Endocrine Society

【 摘 要 】

References(20)Cited-By(2)Following the accident at the Fukushima Daiichi Nuclear Power Station which occurred on March 11, 2011 due to the Eastern Japan Great Earthquake (the Accident), there have been concerns over elevation of the risk of thyroid cancer among children due to internal exposure to radioactive iodine.In Fukushima Prefecture, screening of children with thyroid ultrasonography has been carried out, yielding numerous findings, suggesting a possible influence from the Accident.We report thyroid ultrasonographic findings, used by similar device at Fukushima Prefecture’s study, at Ito-hospital.Of the 2721 children aged 15 or less who visited our hospital between January 2005 and March 2013, 1214 children (330 boys and 884 girls; median age, 12; range of age, 4-15) were covered by evaluation of thyroid ultrasonographic findings, excluding children known in advance to have thyroid disease on the basis of disease history, palpation and blood tests.Among these 1214 children, 709 children (58.4%) were found cysts (≤5 mm in 665 cases) by ultrasonography, 43 children (3.5%) were found nodules (≤5 mm in 18 cases) and 9 children (5.2%) were found an intrathyroid ectopic thymus.Analysis of the data before and after the Accident using the same device, involving age adjustment on the basis of the standard population in 2010, showed no difference in the incidence rate of cysts or nodules.In children examined, the incidence rate of cyst formation (particularly ≤5 mm) was higher, and there was no difference in the incidence rate of cysts or nodules between the pre- and post-accident period.

【 授权许可】

Unknown