Objective To observe the ultrasonic manifestations of local recurrence(LR)of breast cancer after surgery.Methods Totally 82 female breast cancer patients with local hypoechoic in surgical area who underwent ultrasound follow-up were enrolled and divided into LR group(n=18)and non LR group(n=64)according to the local hypoechoic was LR or not.Clinical data and ultrasonic manifestations of primary lesion before operation and postoperative local hypoechoic were observed and compared between groups.Results Significant differences of surgical resection type,molecular subtype,status of smooth muscle actin,Calponin status,Ki-67 status,clinical staging,the maximum diameter and posterior echo of the primary lesion,as well as of involved tissue layer,location,long axis parallel to the skin or not,edge,internal echo,posterior echo,skin change and Adler blood flow grading of local hypoechoic in resection area were found between groups(all P＜0.05).Conclusion Ultrasonic manifestations of LR of breast cancer after surgery had certain characteristics.

Objective To analyze the current status of clinical trial registration in the TCM treatment of diabetic nephropathy(DN);To provide references for the registration and implementation of relevant clinical trials.Methods Clinical trials about TCM treatment for DN registered in the Chinese Clinical Trial Registry(ChiCTR)and the U.S.Clinical Trial Registry(ClinicalTrials.gov)from their inception to August 18,2024 were retrieved.The following information was analyzed:registration year,geographical distribution,funding sources,TCM syndrome patterns of participants,number of research centers,sample size,study type,study design,randomization method,blinding method,intervention measures,outcome indicators and safety indicators.Results A total of 88 clinical trials were included,comprising 79 interventional studies and 9 observational studies.The number of registrations has increased annually.The domestic registered trials were distributed across 17 provincial-level administrative regions in China,with Beijing and Shanghai having the highest number of registrations.The primary sources of funding were local and national government funds.The most common TCM syndrome pattern among participants was qi-yin deficiency with blood stasis.Most trials were single-center studies,with the majority having a sample size between 31 and 60.The predominant study type was interventional,mostly randomized controlled trials(RCTs),with simple randomization being the most frequently used method.31 trials reported blinding methods,with double-blinding being the most common.The intervention measures were mostly oral Chinese patent medicines or TCM compounds,and the outcome indicators were mainly efficacy indicators,with less safety indicators.Conclusion The number of registered clinical trials on TCM treatment for DN has increased annually;however,the overall number remains limited.There is uneven regional distribution and incomplete registration information for various factors such as randomization methods,blinding methods,number of research centers,intervention measures,and outcome indicators.

Objective To explore the pathological features of bronchiolar adenoma(BA)and its specific high-resolution computed tomography(HRCT)signs,and to differentiate BA from minimally invasive adenocarcinoma(MIA)using a non-invasive preoperative method.Methods A total of 80 patients with BA and 130 patients with MIA were retrospectively selected,and the clinical information and HRCT features were compared.All cases were divided into development set and test set at a 7︰3 ratio.Logistic regression analysis was used to screen the independent predictors of MIA and construct a model.Results There were significant differences in age,lobe distribution,density,vacuole sign,tumor-related vessels number(TVN),and distance to pleura(DTP)between BA and MIA patients(P<0.05).Age,density,TVN,DTP and long diameter were identified as independent predictors of MIA.A model was constructed,with area under the curve(AUC)of 0.887 and 0.884 in the development and test sets,respectively.Conclusion The model based on HRCT morphological features of BA and MIA demonstrates superior diagnostic performance compared to individual CT morphological features.

Objective To analyze the current status of clinical trial registration in the TCM treatment of diabetic nephropathy(DN);To provide references for the registration and implementation of relevant clinical trials.Methods Clinical trials about TCM treatment for DN registered in the Chinese Clinical Trial Registry(ChiCTR)and the U.S.Clinical Trial Registry(ClinicalTrials.gov)from their inception to August 18,2024 were retrieved.The following information was analyzed:registration year,geographical distribution,funding sources,TCM syndrome patterns of participants,number of research centers,sample size,study type,study design,randomization method,blinding method,intervention measures,outcome indicators and safety indicators.Results A total of 88 clinical trials were included,comprising 79 interventional studies and 9 observational studies.The number of registrations has increased annually.The domestic registered trials were distributed across 17 provincial-level administrative regions in China,with Beijing and Shanghai having the highest number of registrations.The primary sources of funding were local and national government funds.The most common TCM syndrome pattern among participants was qi-yin deficiency with blood stasis.Most trials were single-center studies,with the majority having a sample size between 31 and 60.The predominant study type was interventional,mostly randomized controlled trials(RCTs),with simple randomization being the most frequently used method.31 trials reported blinding methods,with double-blinding being the most common.The intervention measures were mostly oral Chinese patent medicines or TCM compounds,and the outcome indicators were mainly efficacy indicators,with less safety indicators.Conclusion The number of registered clinical trials on TCM treatment for DN has increased annually;however,the overall number remains limited.There is uneven regional distribution and incomplete registration information for various factors such as randomization methods,blinding methods,number of research centers,intervention measures,and outcome indicators.

Objective To observe the ultrasonic manifestations of local recurrence(LR)of breast cancer after surgery.Methods Totally 82 female breast cancer patients with local hypoechoic in surgical area who underwent ultrasound follow-up were enrolled and divided into LR group(n=18)and non LR group(n=64)according to the local hypoechoic was LR or not.Clinical data and ultrasonic manifestations of primary lesion before operation and postoperative local hypoechoic were observed and compared between groups.Results Significant differences of surgical resection type,molecular subtype,status of smooth muscle actin,Calponin status,Ki-67 status,clinical staging,the maximum diameter and posterior echo of the primary lesion,as well as of involved tissue layer,location,long axis parallel to the skin or not,edge,internal echo,posterior echo,skin change and Adler blood flow grading of local hypoechoic in resection area were found between groups(all P＜0.05).Conclusion Ultrasonic manifestations of LR of breast cancer after surgery had certain characteristics.

Objective To explore the pathological features of bronchiolar adenoma(BA)and its specific high-resolution computed tomography(HRCT)signs,and to differentiate BA from minimally invasive adenocarcinoma(MIA)using a non-invasive preoperative method.Methods A total of 80 patients with BA and 130 patients with MIA were retrospectively selected,and the clinical information and HRCT features were compared.All cases were divided into development set and test set at a 7︰3 ratio.Logistic regression analysis was used to screen the independent predictors of MIA and construct a model.Results There were significant differences in age,lobe distribution,density,vacuole sign,tumor-related vessels number(TVN),and distance to pleura(DTP)between BA and MIA patients(P<0.05).Age,density,TVN,DTP and long diameter were identified as independent predictors of MIA.A model was constructed,with area under the curve(AUC)of 0.887 and 0.884 in the development and test sets,respectively.Conclusion The model based on HRCT morphological features of BA and MIA demonstrates superior diagnostic performance compared to individual CT morphological features.

Objective:To quantitatively evaluate the accuracy of data obtained from liquid-interference surfaces using an intraoral 3D scanner(IOS)integrated with a compressed airflow system,so as to pro-vide clinical proof of accuracy for the application of the compressed airflow system-based scanning head in improving data quality on liquid-interference surfaces.Methods:The study selected a standard model as the scanning object,adhering to the"YY/T 1818-2022 Dental Science Intraoral Digital Impression Scanner"guidelines,a standard that defined parameters for intraoral scanning.To establish a baseline for accuracy,the ATOS Q 12M scanner,known for its high precision,was used to generate true reference values.These true values served as the benchmark for evaluating the IOS performance.Building on the design of an existing scanner,a new scanning head was developed to integrate with a compressed airflow system.This new design aimed to help the IOS capture high-precision data on sur-faces where liquid-interference,such as saliva,might otherwise degrade scanning accuracy.The tradi-tional scanning method,without airflow assistance,was employed as a control group for comparison.The study included five groups in total,one control group and four experimental groups,to investigate the effects of scanning lens obstruction,airflow presence,liquid media,and the use of the new scan-ning head on scanning process and accuracy.Each group underwent 15 scans,generating ample data for a robust statistical comparison.By evaluating trueness and precision in each group,the study as-sessed the impact of the compressed airflow system on the accuracy of IOS data collected from liquid-interference surfaces.Additionally,we selected Elite and Primescan scanners as references for numeri-cal accuracy values.Results:The scanning accuracy on liquid-interference surfaces was significantly reduced in terms of both trueness and precision[Trueness:18.5(6.5)vs.38.0(6.7),P＜0.05;Preci-sion:19.1(8.5)vs.31.7(15.0),P＜0.05].The use of the new scanning head assisted by the com-pressed airflow system significantly improved the scanning accuracy[Trueness:22.3(7.6)vs.38.0(6.7),P＜0.05;Precision:25.8(9.6)vs.31.7(15.0),P＜0.05].Conclusion:The scanning head based on the compressed airflow system can assist in improving the accuracy of data obtained from liquid-inter-ference surfaces by the IOS.

In fixed prosthodontics, clear exposure of the preparation margin is the prerequisite for obtaining accurate digital impressions and improving the marginal fit of restorations. To resolve the issues associated with the cord retraction technique, such as pain, acute injury, and prolonged procedural time, this study proposes a new technology for intraoral digital impression taking with pneumatic gingival retraction. The new scanning head blows a high-speed airflow that instantaneously separates the free gingiva, locally exposing the subgingival preparation margin. Combined with the farthest point preservation stitching algorithm based on the distance from the normal vector and high-speed laser scanning photography, it achieves global preparation edge data and gingival reconstruction, realizing painless, non-invasive, and efficient precise acquisition of the preparation margin. Using this new technique, a patient with a full porcelain crown restoration on a posterior tooth was treated. The digital impression revealed a clear margin of the preparation, and the crown made from this data has a good marginal fit.

When partial nephrectomy is performed by posterior abdominal approach, the surgical field is poorly exposed, resulting in increased surgical difficulty and risk of injury.In this study, 28 patients with T 1a stage kidney tumors underwent retroperitoneal laparoscopic partial nephrectomy. Intraoperatively, exposure of the surgical field was achieved using the percutaneous puncture of the renal fascia suspension technique. There were no dissatisfactory exposures due to peritoneal damage during the surgery, no additional tubes were inserted, and no conversions to open surgery were needed. The operation time was (76.5±20.3) minutes, blood loss was (92.1±18.7) ml, renal artery clamping time was (19.5±4.3) minutes. Postoperatively, there were no complications such as bleeding, infection, or hematuria.

Objective:Differences between randomized controlled trial (RCT) results and real world study (RWS) results may not represent a true efficacy-effectiveness gap because efficacy-effectiveness gap estimates may be biased when RWS and RCT differ significantly in study design or when there is bias in RWS result estimation. Secondly, when there is an efficacy- effectiveness gap, it should not treat every patient the same way but assess the real-world factors influencing the intervention's effectiveness and identify the subgroup likely to achieve the desired effect.Methods:Six databases (PubMed, Embase, Web of Science, CNKI, Wanfang Data, and VIP) were searched up to 31 st December 2022 with detailed search strategies. A scoping review method was used to integrate and qualitatively describe the included literature inductively. Results:Ten articles were included to discuss how to use the RCT research protocol as a template to develop the corresponding RWS research protocol. Moreover, based on correctly estimating the efficacy-effectiveness gap, evaluate the intervention effect in the patient subgroup to confirm the subgroup that can achieve the expected benefit-risk ratio to bridge the efficacy-effectiveness gap.Conclusion:Using real-world data to simulate key features of randomized controlled clinical trial study design can improve the authenticity and effectiveness of study results and bridge the efficacy-effectiveness gap.