Background: Colorectal cancer is one of the main malignant tumors that threaten the healthy of human beings.
研究背景：大肠癌是严重危害人类健康的主要恶性肿瘤之一。
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Colorectal cancer was one of the most common malignant tumors.
大肠癌是最常见的恶性肿瘤之一。
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It usually takes around 10-15 years for abnormal cells to grow into colorectaltumors. With regular screening, polyps can be removed before they develop into cancer.