Dr Tsarkov: Clinical indications for extensive lymph node dissection is still a controversial question， because it is limited by possibilities of our diagnostic tools. For example， the positive prognostic value of CT or MRI investigation of positive lymph nodes in colon and rectal cancer is very low - from 10-30%. Now we try to use artificial intelligence to improve this situation， but there is still quite a low diagnostic value of these diagnostic tools. That is why we need to decide about the extension of lymph node dissection before we start surgery and during surgery. The position of Russian surgeons is to do prophylactic extension of lymph node dissection for patients who have T2-T4 tumors of colon and rectal carcinomas， because there is some benefit from this， as around 30% of these tumors will have metastases to the lymph nodes.
肠息肉很常见，做肠镜检查的人群中，大约15%会发现息肉。」今天就来回答一些关于肠息肉切除常见的问题，希望能让大家了解清楚关于肠息肉切除及后续注意事项，能让更多需要的患者，都可以宽心接受适当的检查与治疗。
但觅友B听了这番话却疑惑地说道:“你的卵巢癌还处于早期，手术就把存疑的淋巴结都切干净了。我的卵巢癌已经到了中晚期，明明病情比你更严重，为什么医生只给我切除了明确有转移的淋巴结，难道不应该切的更干净一点吗?”
患者的情况是这样的：患者是位65岁的乙状结肠癌患者，去年三月份在我院查大便隐血是阴性。这次是因为便血过来我院门诊做肠镜体检时，术前没有腹痛、腹胀、发热、进行性消瘦、乏力等不适症状，追问病史说近几个月来有大便变细的表现。肠镜检查示：退镜观察距肛门约60cm结肠可见一个大小约0.
