Is it uncommon to have prostate cancer go undetected for several years?

No. It is not unusual for prostate cancer to go undetected for years, especially if the patient is not undergoing a yearly routine physical examination. This is because it is usually a slow growing tumor. At the early stages of prostate cancer, there are generally no to mild urinary symptoms. At more advanced stages of prostate cancer, one will experience more urinary issues and body pain.
No. Many men have a lower grade of cancer that can grow slowly for years. Others have more aggressive forms that spread rapidly. Early detection and lots of info are what you want. @thepeedoc.