Objective To systematically review the efficacy of arthroscopic distal clavicle resection (DCR) in repair of rotator cuff (RCR) with acromioclavicular arthritis.Methods The Cochrane Library,PubMed,Medline EMbase,CBM and WanFang Data were searched for studies up to May 2016 concerning the efficacy of arthroscopic distal clavicle resection in repair of rotator cuff with acromioclavicular arthritis.Two reviewers independently screened the literature according to the inclusion and exclusion criteria,extracted the data and assessed the methodological quality of the studies included.Next,meta-analysis was performed using RevMan 5.3 software to compare the efficacy between the patients undergoing arthroscopic DCR plus RCR and those undergoing simple arthroscopic RCR.The randomized control trails (RCT) and clinical control trials (CCT) included were evaluated according to Cochrane Handbook for Systematic Reviews of Interventions (Version 5.1.0) and Methodological Index for Non-randomized Studies (MINORS),respectively.Results A total of 5 studies (3 RCTs and 2 CCTs) involving 465 patients were included.No statistically significant difference was found between the RCR and the DCR plus RCR patients in Visual Analogue Scale (VAS) score,Constant score,American Shoulder and Elbow Surgeons (ASES) score,shoulder range of motion (ROM),postoperative acromioclavicular pain or rotator cuff retear (P ＞ 0.05).The 3 RCTs showed moderate bias risk and the 2 CCTs scored 21 MINORS points.Conclusion Since current evidence shows no advantages of arthroscopic DCR over RCR in repair of rotator cuff with acromioclavicular arthritis in VAS score,Constant score,ASES score,shoulder ROM,postoperative acromioclavicular pain or rotator cuff retear,arthroscopic DCR should not be recommended for routine use in clinic.

Objective To compare arthroscopic double-pulley knotless suture bridge with conven tional arthroscopic suture bridge in repair of rotator cuff tear.Methods From May 2013 to May 2015,70patients with rotator cuff tear were repaired at our department.They were 38 males and 32 females,with a mean age of 53.7 years.They were randomized into 2 equal groups to receive repair either using arthroscopic double-pulley knotless suture bridge (the experimental group) or using conventional arthroscopic suture bridge (the control group).The 2 groups were compared postoperatively in terms of VAS (visual analogue scale),Constant,ASES (American Shoulder and Elbow Surgeons) and UCLA (University of California at Los Angeles) scores,shoulder range of motion,and rotator cuff retear.Results The 2 groups were compatible with no significant differences in gender,age,laterality,tear type,or preoperative function or range of motion of the shoulder joint (P ＞ 0.05).At 12 months postoperatively,the VAS,Constant,ASES and UCLA scores and shoulder range of motion in the experimental group were respectively 1.1 ± 1.3,86.0 ±8.9,13.3 ± 0.8,32.0 ± 2.9,156.8° ± 15.0° and 55.9° ± 5.8°,significantly improved than the preoperative values (P ＜0.05).At 12 months postoperatively,the VAS,Constant,ASES and UCLA scores and shoulder range of motion in the control group were respectively 1.3 ± 1.3,86.6 ±4.2,13.1 ± 1.0,31.1 ±2.6,153.3°±10.0° and 55.7° ± 5.1 °,significantly improved than the preoperative values (P ＜ 0.05).At 12 months postoperatively,there were no significant differences between the 2 groups in VAS,Constant,ASES or UCLA scores or shoulder range of motion (P ＞ O.05).No case of rotator cuff retear occurred in the experimental group while 5 cases were observed in the control group,showing a significant difference (0 versus 14.3％) (P ＜ 0.05).Conclusions Compared with conventional arthroscopic suture bridge,arthroscopic double-pulley knotless suture bridge presents no significant differences in range of motion or function of the shoulder joint in repair of rotator cuff tear.However,the latter may lead to a lower incidence of rotator cuff retear and,additionally,is less skillfully demanding.

China ; epidemiology ; Humans ; Incidence ; Liver Neoplasms ; epidemiology ; mortality

Objective: To evaluate the effects of three-dimensional printing patient-specific instrumentation(PSI) versus conventional instrumentation(CI) in the total knee arthroplasty. Methods: According to "patient-specific" , "patient-matched" , "custom" , "Instrumentation" , "Guide Instrumentation" , "cutting blocks" , "total knee arthroplasty" , "total knee replacement" , "TKA" and "TKR" , the literature on PubMed, EMbase, Cochrane library, CBM and WanFang were searched. According to the inclusion and exclusion criteria, the high quality randomized control trial (RCT) studies about three-dimensional (3D) printing patient-specific instrumentation versus conventional instrumentation in the total knee arthroplasty were collected. The post-operative limb mechanical axis outlier, the position of the components outlier, post-operative knee function, operative time, post-operative blood transfusion and complications were analyzed by RevMan 5.3 software. Results: A total of 13 high quality RCT studies were included. The results of Meta-analysis show that there were no statistical differences in the post-operative limb mechanical axis outlier(Z=0.55, P=0.58, 95% CI: 0.78 to 1.56), femoral coronal component outlier(Z=0.38, P=0.71, 95% CI: 0.69 to 1.72), tibia coronal component outlier(Z=1.95, P=0.05, 95% CI: 1.00 to 3.38), femoral rotation angle outlier(Z=0.36, P=0.72, 95% CI: 0.49 to 1.64), post-operative knee function(Z=1.18, P=0.24, 95% CI: -0.66 to 2.63), post-operative blood transfusions(Z=0.74, P=0.46, 95% CI: -0.10 to 0.05) and complications(Z=0.18, P=0.86, 95%CI: -0.07 to 0.05) between the PSI group and the CI group. But there are statistical differences in the operation time(Z=2.66, P=0.01, 95% CI: -15.97 to -2.41)and tibia sagittal component outlier (Z=3.69, P=0.00, 95% CI: 1.43 to 3.18)between the PSI group and the CI group. Conclusions In the primary total knee arthroplasty the PSI is not superior over the CI for the knee without severe knee varus or valgus deformity or contracture deformity, without the deformity around the knee and without the knee bone loss and obesity. The use of PSI in the primary total knee arthroplasty are not recommend.

Objective To explore the expression and significance of serum DKK1 in patients with gastric cancer. Methods We selected 170 gastric cancer patients (gastric cancer group) and 170 subjects with non-gastric cancer during the same period (control group). ELISA was used to detect the DKK1 level. The ROC curve was used to evaluate the diagnostic performance, and we analyzed the relation between DKK1 level and age, gender, family history of gastric cancer, cigarette smoking, alcohol consumption, tumor size, TNM stage, infiltration depth, lymph node metastasis, liver metastasis, vascular invasion, perineural invasion. Results The serum DDK1 level in GC patients was higher than that in control group (P < 0.0001). ROC curve showed that the possible optimal cut-off value of DKK1 for gastric cancer patients was 167.8 pg/ml, AUC was 0.908, sensitivity was 80.59%, and specificity was 84.71%. There was no significant relation between the serum DKK1 level and age, gender, family history of gastric cancer, cigarette smoking, alcohol consumption, tumor size, liver metastasis, vascular invasion or distant metastasis (all P > 0.05). However, DKK1 level was significantly related with TNM stage, infiltration depth, lymph node metastasis and perineural invasion (all P < 0.05). Conclusion Serum DKK1 level is higher in gastric cancer patients than that of control group and related with the severity of lesions, which indicates that serum DKK1 may be a potential biomarker for gastric cancer screening.

Objective To analyze the literatures about artificial intelligence in cancer research in Web of Science (WOS) core collection database in 2010-2019 and summarize research hot spots and development trends. Methods Through bibliometrics methods and CiteSpace information visualization software, we applied the visual analysis of relevant literature on artificial intelligence in the field of cancer research retrieved from the Web of Science core collection database from 2010 to 2019. Results The number of published articles about artificial intelligence in the field of cancer research had been increasing year by year. The United States ranked first in the number of published articles in this field, the number of citations and cooperation capabilities. Although the number of published articles in China ranked the second, the number of citations was low. The hot spots of artificial intelligence in cancer research were mainly breast cancer and lung cancer. Machine learning, neural network and other methods were used to build models, which were used in basic cancer research, clinical diagnosis, treatment and prognosis prediction. The research frontiers were the methodological research of artificial intelligence, the research on the occurrence and classification of cancer and the research of protein in this field. Conclusion It will effectively promote the development of artificial intelligence in cancer research in China by learning the hot spots and cutting-edge technologies of international research, focusing on international cooperation and cooperation among national institutions and strengthening cross-disciplinary research.

OBJECTIVETo investigate the effect of smoking cessation on the risk of cancer among male subjects.

METHODSParticipants of this study were derived from the workers in Kailuan Group who took the health check-up examination in its 11 affiliated hospitals. The check-up examinations were given biennially based on uniformed standard. From May 2006 to December 2011, health examinations were given for 3 rounds and a total of 104 809 male workers involved. The date of being enrolled in this study was defined as that of taking first check-up, and the date of end-of-observation was defined as that of cancer diagnosis, death or end of follow-up.

INCLUSION CRITERIAage ≥18 while being enrolled in this study, and there was no information missing in the questionnaire for age (or date of birth), smoking status, the age of starting smoking, the age of quitting smoking, and smoking amount. The information of smoking status was collected by questionnaires, and the information of newly-diagnosed cancer cases was obtained by follow-up. After adjusted for age, education background, drinking habits, working environment and BMI, multi-variate Cox proportional hazard regression models were used to analyze the association between smoking cessation and cancer risk (all sites of cancers, smoking-related cancers, and lung cancer) by calculating the values of HR (hazard ratio) and 95% CI (confidence interval).

RESULTSTotally, 104 809 subjects were followed up for 450 639.6 person-years, including 46 013 smokers (43.90%), 51 624 never-smokers (49.26%), and 7 172 smoking quitters (6.84%). Among all these subjects, 1 323 were diagnosed as cancer cases, including 1 082 smoking-related cancers, of which 378 were lung cancer cases. The results showed that, compared with never-smokers, smokers had increased risks for all sites of cancers (HR=1.38, 95% CI: 1.20- 1.59), smoking-related cancers (HR=1.45, 95% CI: 1.24- 1.69) and lung cancer (HR=1.70, 95% CI: 1.31- 2.21). While compared with the smokers, smoking quitters had decreased risk of lung cancer (HR=0.36, 95% CI: 0.20- 0.65). For the smokers with smoking history ≥20 pack-years, HR (95% CI) of lung cancer incidence was 0.09 (0.01- 0.65). For people age ≥60 smoke quitter, HR (95% CI) of lung cancer incidence was 0.33 (0.16- 0.68). For people who quit ≥10 years, HR (95% CI) of lung cancer incidence was 0.19(0.06- 0.58).

CONCLUSIONSmoking cessation might decrease the risk of lung cancer among male smokers. The risk of lung cancer was lower among the smoking quitters with longer history of smoking, older age, and longer years of quitting smoking.

Humans ; Incidence ; Lung Neoplasms ; epidemiology ; Male ; Neoplasms ; epidemiology ; Proportional Hazards Models ; Prospective Studies ; Risk Factors ; Smoking ; adverse effects ; Smoking Cessation ; Surveys and Questionnaires

China ; Colorectal Neoplasms ; Early Detection of Cancer ; Humans ; Urban Population

Objective To understand the incidence and mortality of colorectal cancer in China. Methods The data from GLOBOCAN 2012,Chinese Cancer Registry Annual Report 2012, Cancer Incidence in Five Continents(CI5),the Three National Death Cause Surveys in China and WHO Mortality Database were used to learn about the incidence and mortality of colorectal cancer and related trends in China. Results It was estimated by GLOBOCAN 2012 that in 2012 the age-standardized incidence of colorectal cancer in China was 16.9 per 100 000 in males and 11.6 per 100 000 in females,and the age-standardized mortality was 9.0 per 100 000 in males and 6.1 per 100 000 in females. GLOBOCAN 2012 estimated that colorectal cancer incidence and mortality would increase with the level of human development index. China’s human development level was high, suggesting that the burden of colorectal cancer would be more serious in China with the development of social economy. The data from CI5 VolumeⅣand GLOBOCAN 2012 indicated that the incidence of colorectal cancer began to increase obviously at age of 50 years in China. Chinese Cancer Registry Annual Report 2012 showed that the incidence and mortality of colorectal cancer in urban population were two times higher than those in rural population in 2009,the proportions of colon cancer among colorectal and anus cancers,which was 49.0% in males and 54.2% in females,53.4% in urban population and 41.7%in rural population. CI5 VolumesⅣ-Ⅹshowed that colon cancer and rectum and anus cancer incidence in Shanghai for both males and females were increasing during the period 1973-2007. The percentage change in colon cancer and rectum and anus cancer incidence between 1973-1977 and 2003-2007 increased by 138.8%and 31.1%in males,146.7%and 49.1%in females, respectively. The data from the Three National Death Cause Surveys showed that the crude mortality of colorectal cancer increased by 77.9%form mid 1970’s(1973-1975)to mid 2000’s(2004-2005). WHO Mortality Database showed that average annual percentage change(AAPC)of age-standardized colorectal cancer mortality increased by 0.7%(P<0.05) from 1987 to 2000. Conclusion More attention should be paid to the prevention and control of colorectal cancer in urban area and in male population in China. Similar to the western countries,the burden of colorectal cancer in China would continue to become serious if no population based prevention and control programs are conducted.

Objective To determine the acceptance and willingness to pay for breast cancer screening among populations at high risk of breast cancer in urban China. Methods From 2012 to 2014, a cancer screening program in urban China (CanSPUC) was carried out in 13 provinces. The current survey was conducted among participants who were evaluated as having"high?risk for breast cancer"using a Harvard model (community?based) and then underwent breast mammography or ultrasonography screening procedure (hospital-based). The study mainly focused on their acceptance and willingness to pay under certain self?payment assumption for breast cancer screening. Results A total of 3 049 participants, with a mean age of 52.4±7.0 years, were included. The group aged 45 to 55 years accounted for 50% of the patients, and the median annual income per capita in the recent 5 years was 22 000 (15 000-34 000) Chinese yuan (CNY). Educational level, occupation, and marital status may affect their full acceptance and voluntary payment (P<0.05). Of all the participants, 99% (3 016 participants) could totally or substantially accept the breast cancer screening. When the breast cancer screening was assumed to be conducted every 3 years in the low?cost self?paid context, 85% (2 581 participants) of the participants had the willingness to pay, while only 17% were willing to pay >100 CNY. The remaining 15% of the residents showed no willingness to pay, and the unaffordable expenditure (70%, 438 participants) and unnecessary screening (24%, 112 participants) were the primary considerations. Significant differences in acceptance, willingness to pay, and payment were found among the provinces. Conclusion Almost all high?risk populations for breast cancer could accept breast cancer screening. The willingness to pay was relatively high, but the amount of payment was limited and low.