结肠癌为发病率逐渐上升的恶性肿瘤。由于早期无明显不适,或症状、体征缺乏特异性,临床上不易察觉。多年来由于超声技术的进步,对结肠癌的超声诊断积累了一定的经验。腔内超声和经直肠保留灌肠经腹检查已经能够显示肿瘤全貌且根据浸润程度用于肿瘤分期。但在日常大量的常规经腹 Colon cancer is a progressive increase in the incidence of malignant tumors. As no obvious early discomfort, or symptoms, signs of lack of specificity, clinically difficult to detect. Over the years due to advances in ultrasound technology, ultrasound diagnosis of colon cancer has accumulated some experience. Endoscopic ultrasound and rectal retention enema by abdominal examination has been able to show the whole picture of the tumor and according to the degree of infiltration for tumor staging. But in daily routine a lot of routine abdomen