Objective:To explore the protective effect of nerve plane-oriented laparoscopic total mesorectal excision (NPO+ LTME) for postoperative urinary and sexual function in patients with rectal cancer.Methods:Retrospective analysis was performed on rectal cancer patients who received surgical treatment at Renmin Hospital of Wuhan University from Jan 2016 to Dec 2018, including 114 patients in the NPO+ LTME group and 92 patients in the laparoscopic TME combined with pelvic autonomic nerve preservation (LTME+ PANP) group. Surgical and tumor-related indicators were recorded and compared between the two groups, and postoperative urination and sexual function were followed up.Results:There was no significant difference in baseline indicators between the two groups ( P>0.05). The operative time of the two groups was (150±7) min and (154±7) min, respectively ( t=3.585, P<0.05). Intraoperative bleeding was (9±3) ml and (15±6) ml ( t=7.654, P<0.05), respectively.Three months after surgery, the rate of urinary dysfunction in the NPO+ LTME group was lower than that in the LTME+ PANP group ( Z=2.549, P<0.05), but there was no difference between the two groups 6 and 12 months after surgery ( Z=0.814, P>0.05 and Z=1.275, P>0.05). At 3, 6 and 12 months after surgery, the erectile function in NPO+ LTME group was better than that in LTME+ PANP group ( Z=4.917, P<0.05; Z=4.947, P<0.05 and Z=4.081, P<0.05); The rate of ejaculation dysfunction was also lower than that of the LTME+ PANP group ( Z=4.464, P<0.05; Z=4.948, P<0.05 and Z=4.434, P<0.05); In addition, postoperative female sexual function was superior to LTME+ PANP group ( Z=2.532, P<0.05; Z=2.364, P<0.05; Z=2.076, P<0.05). Conclusion:NPO+ LTME has good surgical safety and also has certain advantages for patient sexual function and early urinary function protection.

Objective: To analyze the relationship between tumor deposits(TD) and clinicopathological features of locally advanced gastric cancer(LAGC) patients. Methods: The clinicopathological characteristics of 300 LAGC patients undergoing radical gastrectomy in Renmin Hospital of Wuhan University from Jan 2014 to Jul 2017 were collected. The relationship between clinicopathological features and prognosis of LAGC patients and TD status in LAGC patients were analyzed retrospectively. Results: TD were positive in 65(21.7%) patients. Univariate analysis showed that the depth of invasion, lymph node metastasis, pTNM stage, tumor size, vascular invasion, preoperative tumor markers were correlated with the status of TD(all P<0.05). Multivariate Logistic regression analysis showed that lymph node metastasis, pTNM stage, vascular invasion and depth of invasion were independent risk factors for positive TD (allP<0.05). Univariate analysis on prognosis of LAGC patients showed lesion location, degree of differentiation, lymph node metastasis, pTNM stage, tumor size, positive TD, number of TD and vascular invasion are associated with prognosis of LAGC (all P<0.05). Multivariate COX regression analysis showed that the number of TD >3 was an independent risk factor for the prognosis of LAGC patients(HR=2.242, 95% CI: 1.484-3.386, P=0.000). The median survival time of TD-positive LAGC was less than TD-negative group(χ²=91.077, P<0.001). The median survival time of TD number>3 group was significantly shorter than that in TD number<3 group and TD-negative group(χ²=192.969, P<0.001). Conclusions TD are closely related to tumor stage in LAGC patients. The status of TD is an independent risk factor for the prognosis of LAGC. Multiple TDs indicate poor prognosis of LAGC patients.