Shibata (2001)

Seiichi Ushikubo @sushikubo

Shibata Y. (2001) "15 years after Chernobyl: new evidence of thyroid cancer" http://t.co/FKfbVwchBt

Seiichi Ushikubo @sushikubo

@myen Shibata (2001) "No thyroid cancer was seen in 9472 children born in 1987–89, ..."

Seiichi Ushikubo @sushikubo

@myen Shibata (2001) "whereas one and 31 thyroid cancers were recorded in 2409 children born .. 1986, .. and 9720 born .. 1983, to .. 1986"

Seiichi Ushikubo @sushikubo

@myen Shibata (2001) "We did ultrasound examinations on a Logic ’α100 machine (7.5 MHz) ..."

Seiichi Ushikubo @sushikubo

@myen "Children with thyroid ultrasonographs showing nodules greater than 5 mm in diameter or abnormal echogenicity ...(cont)"

Seiichi Ushikubo @sushikubo

@myen "(cont)... underwent echoguided fine-needle aspiration biopsy."

Seiichi Ushikubo @sushikubo

@myen Shibata (2001) "To reach a final diagnosis in suspected cases, we sent .. information to Nagasaki University School of Medicine ..."

Seiichi Ushikubo @sushikubo

@myen Shibata(2001) "All patients underwent surgery at the Thyroid Oncology Centre in Minsk, and the diagnosis was confirmed histologically"

Seiichi Ushikubo @sushikubo

@myen Shibata (2001) Table "Frequency of thyroid cancer in the Gomel region of Belarus (1998–2000)" http://t.co/hDXKtcHccv

拡大

Seiichi Ushikubo @sushikubo

@myen Shibata (2001) ".. a significant .. effect of exposure to fallout after Chernobyl in the frequency of thyroid cancer .."

Seiichi Ushikubo @sushikubo

@myen Shibata "The estimated odds ratios of the frequency of thyroid cancer in group III and group II, compared with that in group I, ..."

Seiichi Ushikubo @sushikubo

@myen Shibata (2001) "(cont)... were 121 (95% CI 9–31 000) and 11 (3–176), respectively."

Seiichi Ushikubo @sushikubo

Shibata (2001): 検査対象1 "we did health screening at all schools in the four districts, "

Seiichi Ushikubo @sushikubo

Shibata: 検査対象2 "... but in Gomel city we sampled seven schools with an enrolment of over 1000 by the stratified random sampling procedure."

Seiichi Ushikubo @sushikubo

Sibata (2001): 検査対象1+2 "Thus, we examined all the targeted children in the four districts and about 10% of those in Gomel city."

Seiichi Ushikubo @sushikubo

2001年当時の状況: BMU-2005-668 Appendix 7, M.Tronkoら http://t.co/6EeUIfnCll より引用 http://t.co/XoTFJzCGJt

拡大

Seiichi Ushikubo @sushikubo

事故からの10年以上が経過し、発症年齢が上がるにつれて、発見される腫瘍サイズが小さくなってきていた。つまり、腫瘍の増大速度が遅くなってきていると予想されていた。

Seiichi Ushikubo @sushikubo

発育がゆっくりになってきた(数年かけてある程度の大きさになる)という仮定を設ければ、全例を対象にした超音波検査では数年後に発症する腫瘍を含めた頻度を捉えることができるはず、っていう考えが言外にあるんだと思います。http://t.co/0qLc3Mvo8w