ObjectiveTo compare the results of laparoscopic and open radical operation for rectal cancer.MethodsThree hundred and twelve patients with laparoscopic operation and 226 cases with open operation during the period of June 2004 to August 2009 were included.The long-term survival,operative data,postoperative recovery and complications were compared between the two grougs.ResultsThere were no significant differences in age,sex,tumor stage and histologic types between the two groups.The 3 and 5- year-survival rate was 84.5％ and 66.7％ in laparoscopic group,83.3％ and 64.8％ in traditional operation group with no significant difference by Life-table method.The intraoperative blood loss in laparoscopic group was obviously less than that in open group (61 ± 13 nl vs 174 ±84 ml,t =23.24,P ＜0.05).The time of p assage of gas by anus and hospital stay in laparoscopic group were significantly shorter than those in openg roup (2.7 ±1.3 d vs 3.6 ±1.8 d,t =6.61,P ＜0.05;9.1 ±2.4 d vs 12.0 ±3.4 d,t =11.8,P ＜0.05).No significant difference was observed between the two groups in the lymph nodes clearance ( 11.0 ± 2.7 vs 12±3.6,t=1.72,P ＞0.05),specimen length (16.0 ±3.4 cm vs 16.0 ±4.3 cm,t =0,P＞0.05) and distal margin (3.2 ± 1.3 cm vs 3.2 ± 1.7 cm,t =0,P ＞0.05).Surgical site infection of incision developedin 28casesinopensurgerygroupandin8casesinlaparoscopicgroup(P＜ 0.05 ).ConclusionsLaparoscopic surgery for rectal cancer can achieve similar long-term survival as conventional laparotomy with minimal invasion,quicker recovery and less complications.

Objective:To evaluate the clinical value of 3.0 MRI imaging in evaluating the circumferential margin of rectal cancer.Methods:From March 2016 to May 2018, 105 cases of rectal cancer with definite pathology in Shaoxing People's Hospital were evaluated by preoperative MRI and post-operative pathology.The accuracy, sensitivity, specificity, positive predictive value and negative predictive value were obtained.Results:The accuracy, sensitivity, specificity, positive predictive value and negative predictive value were 87.62%(92/105), 50.00%(1/2), 88.35%(91/103), 7.69%(1/13)and 98.91%(91/92), respectively.Conclusion:The accuracy of MRI in evaluating CRM is higher, the specificity and negative predictive value are higher, while the sensitivity and positive predictive value are lower.The reason is related to enlarging the resection scope during operation.Whether it will affect the prognosis of patients needs further follow-up results.