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最近美国加里兰大学病理学副教授Shamsuddin 博士研究出一种简单、快速、无损伤诊断大肠癌的新方法。Shamsuddin 已用这种方法检查了71例患者,确诊12例大肠癌和肠息肉。并且在尚不具备大肠肿瘤明显临床表现的51例中,发现5例试验阳性,可见此方法具有简单、敏感性高、特异性强的特点,可作为人群大规模普查大肠癌的方法。目前,美国癌症协会建议对50岁以上者每年做便潜血试验开展大肠癌的普查。但是,便潜血试验的假阴性率为20～30%,原因在于它是通过检测较大肿瘤破溃出血来发现结肠癌的。然而不是所有的肿瘤都出血,能引起肠道出血的疾病也并不都是肿瘤。因此假
Dr. Shamsuddin, an associate professor of pathology at the University of Garland, USA, recently developed a new method for the simple, rapid and non-invasive diagnosis of colorectal cancer. Shamsuddin has used this method to examine 71 patients and diagnosed 12 cases of colorectal cancer and intestinal polyps. And in 51 patients who did not have obvious clinical manifestations of colorectal tumors, 5 cases were found to be positive, showing that this method has the characteristics of simplicity, high sensitivity and strong specificity, and can be used as a method for large-scale population screening of colorectal cancer. At present, the American Cancer Society recommends that every person over the age of 50 undergo a fecal occult blood test every year to conduct a general survey of colorectal cancer. However, the false negative rate of the fecal occult blood test is 20 to 30% because it detects colon cancer by detecting a larger tumor rupture. However, not all tumors are bleeding, and diseases that cause intestinal bleeding are not all tumors. So fake