These polyps are removed during colonoscopies, which are recommended for everyone over the age of 50.
这些息肉在结肠镜检查时被切除了，这种方法适合所有五十岁以上的患者。
2
Patients with a prior history of polyps or colon cancer may also undergo colonoscopies to exclude recurrence.
先前有息肉或结肠癌病史的患者也应经结肠镜检查，以排除复发的可能。
3
Doctors use several tools to screen for colon cancer and precancerous lesions, including blood tests and imaging technologies such as X-rays and CT scans (also known as "virtual" colonoscopies).