Objective To study medicine storage scale model for disaster relief.Methods The medicine storage scale for disaster relief was dynamically simulated by using DAMANO programming language of System Dynamics (SD) and was calculated with discrete algorithm using FORTRAN programming language.Results The established model could be used for dynamic tracing of the inventory of the warehouse.Conclusion Medicine storage scale for disaster relief can be determined through the model established by dynamic simulation or discrete calculation.

Objective To explore the establishment of WeChat teaching platform and evaluate the effect of micro-lectures in obstetrics and gynecology teaching. Methods A total of 116 trainees (experi-mental group) of 2014 grade and 113 trainees of 2013 grade (control group) were enrolled in the study. The Students' ability of self-learning and collaborative innovation were measured with LASSI and CUCEI scales, and their academic performance was evaluated with using t test. Results The comparison of the four know-ledge modules showed that the differences in the results of the two knowledge modules, the ectopic pregnancy (P=0.00) and uterine fibroids (P=0.01) between the experimental group and the control group were signifi-cant. Besides, the comparison of students' literacy suggested that the differences in time management (P=0.01), selection of main points (P=0.04), innovation (P=0.00) and collaboration capability (P=0.03) between the experimental group and the control group were obviously significant. Conclusions Micro-lectures-assisted teaching can effectively improve students' academic performance, which has important practical value for improving students' self-learning ability, innovation and collaboration.

According to the three steps of teaching design, teaching practice and teaching reflection, the research group organized and implemented WeChat public platform to assist the teaching of the battlefield first aid course. Teaching design focused on three aspects: teaching content setting, learning process development and learning effect evaluation. Content setting highlighted the relevance of key content and knowledge points. The learning process emphasized two steps:teaching before class and internalizing in class . A variety of evaluation methods were used in teaching effect evaluation . Through investigation , interview and analysis of test results, it was shown that this new teaching method was generally accepted by experimental class students. Students in this class have generally improved their three core abilities and their test scores were also higher than those of the control class. This research provides fresh ideas and a useful example for the implementing WeChat public platform as an assist in the teaching of other courses in the military medical university. In addition, the research group believe that in-depth research and discussions are still needed on how to effectively deal with such problems as the lack of diversification of contents in WeChat public platform.

Co-occurrence of renal cell carcinoma with two different histology is very rare. Here we present a 61-year-old gentleman with right renal mass in clinics. The diagnosis was right renal cell carcinoma by two different enhanced mass showing on CT scan. Right laparoscopic nephrectomy was performed. Pathology showed that one mass was papillary renal cell carcinoma, the other was clear cell renal cell carcinoma. No recurrence or metastasis was found during 36 months of follow up.

BACKGROUNDOver the past two decades, the clinical presentation of renal masses has evolved, where the rising incidence of small renal masses (SRMs) and concomitant minimal invasive treatments have led to noteworthy changes in paradigm of kidney cancer. This study was to perform a proportional meta-analysis of observational studies on perioperative complications and oncological outcomes of partial nephrectomy (PN) and radiofrequency ablation (RFA).

METHODSThe US National Library of Medicine's life science database (Medline) and the Web of Science were exhaustly searched before August 1, 2013. Clinical stage 1 SRMs that were treated with PN or RFA were included, and perioperative complications and oncological outcomes of a total of 9 565 patients were analyzed.

RESULTSPatients who underwent RFA were significantly older (P < 0.001). In the subanalysis of stage T1 tumors, the major complication rate of PN was greater than that of RFA (laparoscopic partial nephrectomy (LPN)/robotic partial nephrectomy (RPN): 7.2%, open partial nephrectomy (OPN): 7.9%, RFA: 3.1%, both P < 0.001). Minor complications occurred more frequently after RFA (RFA: 13.8%, LPN/RPN: 7.5%, OPN: 9.5%, both P < 0.001). By multivariate analysis, the relative risks for minor complications of RFA, compared with LPN and OPN, were 1.7-fold and 1.5-fold greater (both P < 0.01), respectively. Patients treated with RFA had a greater local progression rate than those treated by PN (RFA: 4.6%, LPN/RPN: 1.2%, OPN: 1.9%, both P < 0.001). By multivariate analysis, the local tumor progression for RFA versus LPN/RPN and OPN were 4.5-fold and 3.1-fold greater, respectively (both P < 0.001).

CONCLUSIONSThe current data illustrate that both PN and RFA are viable strategies for the treatment of SRMs. Compared with PN, RFA showed a greater risk of local tumor progression but a lower major complication rate, which is considered better for poor candidates. PN is with no doubt the golden treatment for SRMs, and LPN has been widely accepted as the first option for nephron-sparing surgery by experienced urologists. RFA may be the best option for select patients with significant comorbidity.

Catheter Ablation ; adverse effects ; methods ; Humans ; Kidney Neoplasms ; surgery ; therapy ; Nephrectomy ; adverse effects ; methods