An evaluation of screening for lung cancer in Niigata prefecture, Japan. A population-based case control study

Efficacy of CT screening for lung cancer in never-smokers: Analysis of Japanese cases detected using a low-dose CT screen

“…This is consistent with the results of a recent Japanese X-ray screening trial in which four independent case-control studies were conducted in four different regions: Miyagi [30], Gunma, Niigata [31], and Okayama Prefecture [32] by the Japanese Ministry of Health and Welfare [33]. These four studies matched the backgrounds of gender, year of birth, smoking histories (except Okayama), and municipality.…”

Different efficacy of CT screening for lung cancer according to histological type: Analysis of Japanese-smoker cases detected using a low-dose CT screen

“…LC screening regimens to date have employed chest X-ray and sputum cytology, but no reduction in lung cancer-specific mortalities has resulted from these methodologies in Western countries [3][4][5]. On the other hand, recent Japanese case-control studies of X-ray screening and sputum cytology have demonstrated a reduced risk of LC death [6][7][8]. Although the reason why these differences occur are debatable, the Japanese Ministry of Health and Welfare recommends X-ray screening program for LC in Japan [9].…”

Lung cancer screening

“…More recently, several case-control studies of CXR screening have been reported from Japan [16][17][18][19][20]. The cases were individuals who had died of lung cancer.…”