Number of Fukushima kids with thyroid cancer up 17 from Dec13

Japan Times. 20 May 2014

“FUKUSHIMA – The Fukushima Prefectural Government has confirmed in a new report that 50 children in the prefecture have developed thyroid cancer, an increase of 17 from previous study last December, sources said Monday.

The latest report, made Monday to an expert panel examining the results of health checkups on Fukushima residents, also detailed 39 children suspected of having developed cancer, sources said.

The cancer figure was taken at the end of March among Fukushima residents who were 18 or younger at the time of the March 2011 nuclear accident at Tokyo Electric Power Co.’s Fukushima No. 1 atomic plant.

After studying data provided so far, including the new cancer figures, the panel said it was difficult to determine that a causal link existed between the children’s cancers and the triple meltdown at the nuclear plant.

The Fukushima health examination program covers some 370,000 residents. Of them, some 80 percent have already received the checkups.

Once the results of the first round checkups become available, likely in August, the panel will again assess the thyroid cancer numbers and any possible connection between the cancers and the accident, the sources said.”


Matsuda A, Matsuda T, Shibata A, Katanoda K, Sobue T, Nishimoto H and The Japan Cancer Surveillance Research Group. Cancer Incidence and Incidence Rates in Japan in 2007: A Study of 21 Population-based Cancer Registries for the Monitoring of Cancer Incidence in Japan (MCIJ) Project. Japanese Journal of Clinical Oncology, 43: 328-336, 2013 Download Source Data as Excel spreadsheets at

Dataset: “Incidence (National estimates), cancer_incidence(1975-2008)E.xls” Link:









FUKUSHIMA – see previous post (FMU official thyroid survey findings. Press reports : Esther Tanquintic-Misa | March 10, 2014 3:12 PM EST a-thyroid-cancer-children-trust-disaster-chernobyl.htm
International Business Times

Fukushima 3 Years After: Thyroid Cancer Cases Among Children Rising by By Esther Tanquintic-Misa | March 10, 2014 3:12 PM EST

“Cases of thyroid cancer among children residing in Fukushima have grown steadily since the disastrous March 2011 incident. Citizens have all but lost hope and confidence in their government. And three years after, no one has been made accountable for the supposed worst nuclear disaster since the 1986 Chernobyl.

To say that Fukushima’s children have been robbed of their childhood and right to play and explore the outside world is an understatement….Doctors have seen a rising number in the cases thyroid cancer in children and young adults in Fukushima. In February, the cases of thyroid cancer in individuals aged between 18 and below jumped to 75, where 33 were confirmed to have cancer.

On Sunday, thousands joined anti-nuclear protests to signify their loss of trust against the government as the latter moves to reignite the country’s 50 idled nuclear reactors….So far, 254,000 out of 375,000 Fukushima children have been tested for possible cancer ailments and will continue to be screened in their entire lifetime…”

“A child walks past a geiger counter, measuring a radiation level of 0.162 microsievert per hour, at a square in front of Koriyama Station in Koriyama, west of the tsunami-crippled Fukushima Daiichi nuclear power plant, Fukushima prefecture March 1, 2014. March 11 marks the third anniversary of the earthquake and tsunami that devastated Japan’s Fukushima Daiichi nuclear power plant. In Koriyama, a short drive from the crippled Fukushima nuclear plant, the city recommended shortly after the disaster that children up to two years old not spend more than 15 minutes outside each day. Those aged 3 to 5 should limit their outdoor time to 30 minutes or less. The limits were lifted last year, but many kindergartens and nursery schools continue to obey them even now in line with the wishes of worried parents. An annual survey by the Fukushima prefecture Board of Education found that children in Fukushima weighed more than the national average in virtually every age group. The cause seems to be a lack of exercise and outdoor activity. Picture taken March 1, 2014. REUTERS/Toru Hanai”

Abstract Number : 6096 | ID : O-4-18-01
Thyroid Cancer under 19 years old in Fukushima, Japan
Toshihide, Tsuda, Department of Human Ecology, Japan; Eiji, Yamamoto, Okayama University of Science, Japan; Etsuji, Suzuki, Okayama University, Japan
Exposure: ionizing radiation

Background: Fukushima Daiichi Nuclear Power Plant began to release radioactive substance after the earthquake on March 11, 2011, which included radioactive iodine and cesium. Therefore, incidence of thyroid cancer among childhood in the area has been a public health concern. The committee of health control examination in Fukushima Prefecture planned thyroid cancer screening for all children aged 18 years or younger every 3 years. The results of the screening have been released every 3 months. The screening was undergone at the nearest areas from the power plant in the first year (until March 31th, 2012), then at the moderately near area including Fukushima City in the second year (until March 31th, 2013). We present our findings based on the data until June 5th, 2013. Aim: To estimate childhood thyroid cancer incidence rate ratio in Fukushima, compared with age, sex-specific incidence estimates of thyroid cancer (1975-2008) from the Center for Cancer Control and Information Services, National Cancer Center, Japan. Poisson distribution was employed to estimate 95% confidence intervals. Results: From the nearest area group (mostly within 50km from the power plant: 40,764 examinees), 205 cases were suspected by ultrasound imaging, 166 (81.0%) were undergone on the 2nd examination, then, 11 thyroid cancer cases were identified by cytology, of which 7 cases have been operated and confirmed. Mean age of the cancer cases in the nearest area was 17.3 (range 13-19) years old, and mean diameter 14.1 mm (range 6.0-33.0mm). From 46,367 examinees of Fukushima City (50-80 km from the power plant), 263 cases were suspected by ultrasound imaging, 228 (86.7%) were undergone on the 2nd examination, then, 9 thyroid cancer cases were identified by cytology.?Assuming two years for duration on detectable level of cytology until clinical level, incidence rate ratio was 26.98 (95% confidence interval, 14.12-48.61) in the nearest area, and in Fukushima city, it was 19.41 (95% confidence interval,?9.62-37.31), compared with the Japanese mean annual incidence among those aged 15-19 years from 1975 to 2008 (i.e., 5 per 1,000,000).

: Although any screening effect may exist, excess incidence rate ratios were observed in both the nearest area and Fukushima City. Dose-response relationship by distance from the plant was indicated. Both further investigations and countermeasures against the suspected outbreak are necessary in Fukushima and the neighboring areas.