Usually, cancer diagnosis is used tissue biopsy or blood, but lung cancer biopsy is difficult to pick up and the good blood biomarker for lung cancer isn't known.
Therefore, I think X-ray is very important tools for lung cancer diagnosis.
However, this news suggests this test is not always suitable for all patients.
胸部X線撮影を用いた肺癌スクリーニングの利益を検証するために行われた大規模な無作為化試験で、スクリーニングを4年間毎年実施しても、肺癌罹患率と肺癌死亡率のいずれにも好ましい影響は見られないことが明らかになった。米Minnesota大学のMartin M. Oken氏らが、JAMA誌2011年11月2日号に報告した。
胸部X線による肺癌検診に肺癌死亡率の低減効果なし：日経メディカル
If this new is true, what we can believe?
My parents have smoked for a long time, so I'm worry about their health.
Smoking is well-known about causes of a lot of cancer, and lung cancer is induced by long-period's smoking too.
Surely, smoking is not good habit, and smokers maybe have to accept to get cancer near future.
Nevertheless, I hope that good diagnostic test would be found.
