Lung cancer can sometimes go undetected for a significant amount of time, especially in its early stages. The specific duration varies depending on several factors, including the type and location of the tumor, the individual’s overall health, and whether they have any symptoms.

In some cases, lung cancer can remain undetected for years as it may not cause noticeable symptoms until it reaches an advanced stage. However, routine screening tests, such as chest X-rays or low-dose CT scans, can help detect lung cancer earlier in certain individuals, such as those with a history of smoking or other risk factors.

It’s worth noting that early detection of lung cancer often leads to more effective treatment options and improved outcomes. Therefore, if you have any concerns or risk factors associated with lung cancer, it is best to consult with a healthcare professional for appropriate screening and guidance.