Objective To study the features of lymph node metastasis in gastric stump cancer （GSC） in order to provide the basis for the reasonable lymph node dissection in the GSC lymphadenectomy. Methods Twenty-two GSC patients accepted residual radical gastrectomy and 50 primary gastric cancer patients accepted distal D2 lymphadenectomy by the same surgeon from June 2004 to June 2012 at the department of general surgery-pediatric surgery of the People’s Hospital of Guangxi Zhuang Autonomous Region were included in this retrospective study. And the clinicopathologic factors and lymph node metastasis were compared in two groups. Results The combined organ resection rate in the primary gastric cancer patients was significantly lower than that in the GSC patients 〔14.00% （7/50） versus 54.55% （12/22），χ2=12.929，P=0.000〕. In the lymph node metastasis，the total positive rate and No.10 positive rate of lymph node metastasis in the GSC patients were significantly higher than those in the primary gastric cancer patients 〔30.56% （103/337） versus 22.13% （208/940），χ2=9.583，P=0.002；52.17% （12/23） versus 17.39% （4/23），χ2=6.133，P=0.013〕. The positive rate of lympl node micrometastasis between the GSC patients and primary gastric cancer patients was no significant difference〔2.97% （10/337） versus 1.49% （14/940），χ2=2.939，P=0.086〕 . There was 4/12 lymph node micrometastasis in the GSC patients，which was 0/4 in the primary gastric cancer patients. The positive rate of the jejunal mesentery lymph node metastasis was 35.71% （5/14） in the GSC patients. Conclusions GSC has a unique pattern in lymph node metastasis. D2 dissection and jejunsl mesentery lymph node dissection should be performed for these patients，especially，on No.10 lymph nodes. If needed，en bloc resection with invaded adjacent organs should be considered．
Objective To study the safety and feasibility of modified laparoscopic Dixon surgery for rectal cancer. Methods In the procedure of modified laparoscopic Dixon surgery, the rectum with tumor was pulled out and cut and colon-rectum anastomosis was performed through anus. The clinical data of patients with rectal cancer between modified laparoscopic Dixon surgery (laparoscopy group) and open Dixon surgery (open group) were compared and analysed prospectively. The clinical data included operative time, volume of bleeding, number of lymph node dissection, volume of abdominal drainage, time to bowel gas passage, hospital stay and relative complications, such as anastomotic leakage, ureteral injury, dysuria and fecal incontinence. Results Fifty-eight cases were selected in this study between September 2007 and July 2008, including 25 laparoscopic surgery in laparoscopy group and 33 open surgery in open group. Patient’s data on gender, age, distance between tumor and anus edge, tumor diameter, tumor pathologic type and Dukes stage were similar between two groups by statistic analysis (Pgt;0.05). All the operations were performed successfully. Two cases experienced anastomotic leakage in laparoscopy group, while 1 case experienced anastomotic leakage in open group. All these patients got recovered by conservative treatment at last. No other complications were experienced, such as ureteral injury, dysuria, fecal incontinence, and so on. There were no significant differences in term of operative time, volume of bleeding and number of lymph node dissection between two groups (Pgt;0.05). The volume of abdominal drainage was less while the time to bowel gas passage and hospital stay were shorter in laparoscopy group than those in open group (P＜0.05). Conclusion This study reveals that it is safe and feasible to perform modified laparoscopic Dixon surgery for rectal cancer, and it presents the character of minimal invasion.