Thyroid Ultrasound Examination: Outline of the Evaluations of the First Full-scale Survey (Second-round Survey) Results
In June 2019, the Thyroid Ultrasound Examination Evaluation Subcommittee, which was established under the Prefectural Oversight Committee for the Fukushima Health Management Survey, published the "Report on the Results of the first Full-scale Survey of the Fukushima Thyroid Ultrasound Examination." In the Report, the Subcommittee states that no correlation is found between thyroid cancer cases detected through the first Fullscale Survey (second-round survey) and radiation exposure due to Tokyo Electric Power Company (TEPCO)'s Fukushima Daiichi NPS Accident. Additionally, the Subcommittee points out the necessity to review evaluations of the Thyroid Ultrasound Examination and examination results from the following perspectives:
• It is necessary to analyze accumulated results of the second and third Full-scale Surveys.
• It is necessary to conduct analyses by properly ascertaining the status of developing cancer among the subjects of Thyroid Ultrasound Examination using regional and national cancer registries.
• It is necessary to study correlation between doses and incidence rates of thyroid cancer in the future by using more detailed data on estimated thyroid exposure doses as a casecontrol study with adjusted confounding factors or as a prospective study.
- Included in this reference material on March 31, 2020