Forty one patients with esophageal carcinoma (T3N1 M0 or less) underwent video-assisted thoracoscopic surgery (VATS) in prone position for esophagectomy from September 2006 to September 2010.The postoperative outcome and survival of patients were retrospectively analyzed.The results confirmed the feasibility and safety of this minimally invasive esophagectomy performed by thoracoscopy in the prone position for patients with esophageal carcinoma.

Thirty-three patients with esophageal carcinoma (T3N1M0 or less) underwent thoracoscopic surgery in lateral prone position for esophagectomy from February 2010 to November 2012.Their postoperative outcomes and survivals were retrospectively analyzed.The results confirmed the feasibility and safety of this mini-invasive thoracoscopic procedure in lateral prone position for patients with esophageal carcinoma.A possible advantage of lateral prone technique is that in case of an emergency switch to open surgery,precious time may be saved in changing body position.

Objective To investigate the genetype distribution of mycoplasma pneumoniae(MP) by denaturing high-performance liquid chromatography(DHPLC).Methods A total of 300 cases nasopharyngeal aspirate were collected from our hospital.The MP genes of standard strains and clinical specimens isolates were amplified by PCR followed by DHPLC and genetype determination.Results A total of 110 cases were positive after 24 hours fermentation from 300 cases with pharyngeal swab.By the specific primers of MP-129,MP-FH standard strain and specimens,2 280 bp and 2 580 bp gene fragments were made out respectively.One hundred and ten strains of clinical isolates were detected by DHPLC.One hundred and seven strains of P1-Ⅰ were 1b subtype,3 were type P1-Ⅱ which were all 2a subtype.Conclusion The genetype of MP infection in children from our hospital is P1-Ⅰ,1b subtype by using DHPLC technology.

Objective To investigate the nursing points of endoscopic full-covered self-expanding removable metal stents (FCSERMS) implantation for bile duct anastomotic strictures after liver transplantation. Methods The clinical data of patients who were treated by endoscopic full-covered self-expanding removable metal stents implantation for bile duct anastomotic strictures after liver transplantation from January 2013 to July 2015 were retrospectively analyzed, and the nursing process were summarized. Results The group of 9 patients were successfully placed and removed with FCSERMS. There was no postoperative complication, such as stent migration, acute pancreatitis, biliary bleeding and intestinal leakage. All the bile duct strictures were relieved after FCSERMS removement. Followed up for 10-32 months, there was no symptom and sign of bile duct anastomotic stricture recurrent. Conclusions The key in nursing points of FCSERMS implantation for bile duct anastomotic strictures after liver transplantation are introducing the function of FCSERMS and therapeutic process to improve patient compliance, mastering the endoscopic operations, the placement and removal method of FCSERMS to short operation time, strengthening postoperative nasal bile duct care, paying attention to the observation, detection and treatment of postoperative complications after the metal stent placement and removement, as well as the continuing care during the period between placement and removment of FCSERMS.

Objective To analyze and verify the expression profiles of long non-coding RNAs (lncRNAs) in gastric cancer (GC) metastatic lymphonodus.Methods Microarray analysis was performed in 3 GC positive lymphonodus and 1 normal lymph node with Agilent Array platform to measure the expression levels of lncRNAs and mRNAs and to investigate the expression differences of lncRNAs in GC metastatic lymphonodus and normal lymphonodus, and hierarchical clustering used to screen out the differently expressed lncRNAs.15 up-regulated lncRNAs and 15 down-regulated lncRNAs were randomly chosen and RT-PCR was used to verify the expression differences.Results Comparing with normal lymphonodus, 353 lncRNAs and 547 mRNAs are up-regulated, but 464 lncRNAs and 562 mRNAs are down-regulated in GC metastatic lymphanodus as 6 times or more variation was found.The expressions of lncRNA OR3A4, LOC84740, FCGR1C and C21orf 96 were increased in GC metastatic lymphonodus, but lncRNA MSTO2P, LOC344595, TUG1, TYW3 and KRT8P10 decreased.Conclusions LncRNAs are aberrantly expressed in GC metastatic lymphonodus.

Objective To evaluate the feasibility of using the posterior approach with cervical pedicle screw fixation technique for the treatment of lower cervical spine fractures and dislocations.Methods Thirty patients suffered lower cervical fractures and dislocations were retrospectively analyzed,and they were underwent cervical pedicle screw system fixation surgery from January 2010 to December 2012.There were 22 males and 8 females,with an average age of 41 years (range,24-61 years).Eight injuries were located at C4,5,12 at C5,6,and 10 at C6.7.According to the American Spinal Cord Injury Association (ASIA)impairment scale,8 cases were grade A,12 were grade B,5 were grade C,3 were grade D,and 2 were grade E.Results Reduction and fixation of the injured segments were performed via a posterior approach in all 30 patients.One hundred and forty pedicle screws were inserted successfully in all patients on the postoperative radiographic and CT scans.All the patients were followed up for 3-23 months,with the average of 11 months.According to the ASIA impairment scale,eight cases with grade A were still grade A,but the feeling and movement improved obviously.Ten grade B improved to grade C and the rest cases were complete recovery after operations.During the course of the follow up,solid bone union was achieved in all patients,and there were no hardware failures.All the patients' postoperative MRI showed disappearance of the spinal cord compression after reduction in all cases.Conclusion For the patients of lower cervical fractures and dislocation,the first choice of operation should be the posterior approach reduction and fixation with cervical pedicle screw.The correct lengthwise traction method could unblock the locked facet effectively,and prevent the retrusion of disc and the further injury of spinal cord.For the patients of disc disruption,the posterior approach could be used only.The cervical pedicle screw system could provide three-dimensional reduction of the injured cervical segments and the adequate mechanical strength.The posterior approach combined with pedicle screw fixation is feasible and effective for the treatment of lower cervical fractures and dislocation.

Objective To make a rapid dose estimation for a patient exposed locally to high dose radiation exposure in early stage of 5.7 192Ir source accident in Nanjing.Methods Based on source parameters,exposure pattern,and time duration,the doses were estimated using MCNP simulations with the aid of the proper East Asia adult male voxel phantom and main physiological parameters of the exposed patient.Result Absorbed doses to 16 organs or tissues were estimated to be in the range 0.03 to 9.16 Gy.Also,the iso-dose curves for the skin of legs showed clearly the dose difference between right and left legs.Absorbed doses to patient's testicles and prostrate,about 9.16 Gy,were higher than those to other organs or tissues.The skin of both legs was exposed locally to high dose radiation exposure,for which the estimated doses were in agreement with the results obtained from infrared thermal imaging.Conclusions Monte Carlo simulation technique and common software can be used for dose estimation in early stage of radiation accidents effectively with integrating proper models.

Objective To use three different methods in attempt to estimate the biological dose of the patient partially exposed to 192Ir source at5.7 accident in Nanjing,so as to provide dosimetric information for clinical remedy of exposed patients in the emergency of a nuclear accident.Methods Peripheral blood samples were collected on days 5 after exposure.The biological dose was estimated by the yields of dicentrics plus rings ( dic + r),cytokinesis-block micronuclei (CBMN) assay and nucleoplasmic bridge plus FHC (NPB + FHC).The homogeneity of radiation exposure was examined by Poisson distribution of dicentrics.Results By using three different methods,the whole body equivalent dose was dic + r estimated to be 1.51 Gy (95％ CI 1.40-1.61),1.47 Gy (95％ CI 1.36-1.60) by CBMN and 1.30 Gy (95％ CI 1.00-1.60) by NPB + FHC,respectively.A non-poisson distribution was also detected,suggesting partial body radiation exposure.Conclusions The estimated whole body equivalent dose ot a non-uniform radiation exposure was consistent with clinical diagnosis,suggesting that the yields ofdic + r,CBMN,as well as NPB + FHC,are efficient approaches to the estimation of biological doses.

Objective To explore the natural attenuation pattern of three biological dose estimation indexes in vivo by investigating the effect on biological dosimetry of peripheral blood sampling at different time points from the victim partially exposed to 192Ir radiation source at5.7 accident in Nanjing.Methods Peripheral blood of the patient was collected on days 5,40 and 280 after exposure,respectively.The yields of dicentrics plus rings chromosomes (dic + r),cytokinesis-block micronuclei (CBMN) and nucleoplasmic bridge + fusion + horse shoe + circular(NPB + FHC) were analyzed.The dynamic reduction and dose estimation were both observed using the biomarkers mentioned above after exposure.Results Compared to the estimates on days 5 after exposure,the dose values estimated on days 40 and 280 decreased by 34％ and 49％ fordic + r method,48％ and 79％ for the CBMN assay,and 48％ and 75％ for NPN + FHC method,respectively.Conclusions Three biological dose estimation indexes show a progressive decrease in vivo,with the half-life of dic + r/cell being 40 days.The doses estimated using these three indexes on days 40 after exposure showed a relative deviation more than 20％ compared with those on days 5 after exposure.

Objective To evaluate the clinical outcome in the treatment of humerus shaft comminuted fractures using limited open reduction and internal fixation combined with an external fixator.Methods Data of 80 patients with comminuted humerus shaft fractures treated from January 2005 to January 2013 were analysed retrospectively.All the patients underwent limited open reduction and internal fixation combined with an external fixator (treatment group) and open reduction and plate fixation (control group) according to the random number table.In the treatment group,there were 40 patients (28 males,12 females),at mean age of 33.5 years (range,21-54 years),with causes of injury including traffic accidents in five patients,falls in nine,crashes in seven and others in six.There were seven patients with open fractures and 33 with closed fractures.In the control group,there were 40 patients (25 males,15 females),at mean age of 32.9 years (range,19-55 years),with causes of injury including traffic accidents in 16 patients,tumbling in seven,crush in seven and others in ten.There were eight patients with open fractures and 32 with closed fractures.The operation time,intraoperative blood loss,bone union time and complications in both groups were recorded.Clinical efficacy was evaluated using the Stewart and Hundley standard.Results Mean follow-up was 19 months (range,15-24 months).Treatment and control groups showed significant differences in operation time [(55.5 ± 10.3) minutes vs.(120.5 ± 15.3) minutes],intraoperative blood loss [(120.4 ± 20.7) ml vs.(245.4 ± 26.7) ml] and bone union time [(11.6 ± 1.3) weeks vs.(14.9 ± 2.3) weeks] (P ＜ 0.05).Rate of incision infection was 8％ (3/40) in treatment group and 10％ (4/40) in control group (P ＞ 0.05).In treatment group the results were excellent in 31 patients and good in nine.In control group the results were excellent in 27 patients,good in nine,fair in one and poor in three.One patient with radial nerve injury after a second surgery for implant removal and two patients with osteomyelitis or bone nonunion were noted in control group.Conclusion Limited open reduction and internal fixation in combination with an external fixator is associated with small trauma,easy operation,short operation time,few bleeding,rigid fixation,early functional exercises and reduced bone nonunion for treatment of comminuted humerus shaft fractures,which exhibits great clinical value.