Lung cancer is the most common cancer worldwide. In the United States, it causes more cancer-related deaths than the next four causes （breast cancer, prostate cancer, colon cancer, and pancreatic cancer） of cancer-r...Lung cancer is the most common cancer worldwide. In the United States, it causes more cancer-related deaths than the next four causes （breast cancer, prostate cancer, colon cancer, and pancreatic cancer） of cancer-related mortality combined （1）. About 30% of people have already progressed to stage III lung cancer and 40% to stage IV at the time they are diagnosed （2）. Although chest X-ray and sputum cytology, when applied in health check-ups, can identify some relatively small tumors, they are not able to lower the overall mortality （3）. More recently,展开更多
AIM To investigate the relationship between histological mixed-type of early gastric cancer(EGC) in the mucosa and submucosa and lymph node metastasis(LNM).METHODS This study included 298 patients who underwent gastre...AIM To investigate the relationship between histological mixed-type of early gastric cancer(EGC) in the mucosa and submucosa and lymph node metastasis(LNM).METHODS This study included 298 patients who underwent gastrectomy for EGC between 2005 and 2012. Enrolled lesions were divided into groups of pure differentiated(pure D), pure undifferentiated(pure U), and mixed-type according to the proportion of the differentiated and undifferentiated components observed under a microscope. We reviewed the clinicopathological features, including age, sex, location, size, gross type, lymphovascular invasion, ulceration, and LNM, among the three groups. furthermore, we evaluated the predictors of LNM in the mucosa-confined EGC.RESULTS Of the 298 patients, 165(55.4%) had mucosa-confined EGC and 133(44.6%) had submucosa-invasive EGC. Only 13(7.9%) cases of mucosa-confined EGC and 30(22.6%) cases of submucosa-invasive EGC were observed to have LNM. The submucosal invasion(OR = 4.58, 95%CI: 1.23-16.97, P = 0.023), pure U type(OR = 4.97, 95%CI: 1.21-20.39, P = 0.026), and mixedtype(OR = 5.84, 95%CI: 1.05-32.61, P = 0.044) were independent risk factors for LNM in EGC. The rate of LNM in mucosa-confined EGC was higher in the mixedtype group(P = 0.012) and pure U group(P = 0.010) than in the pure D group, but no significant difference was found between the mixed-type group and pure U group(P = 0.739). Similarly, the rate of LNM in the submucosa-invasive EGC was higher in the mixedtype(P = 0.012) and pure U group(P = 0.009) than in the pure D group but was not significantly different between the mixed-type and pure U group(P = 0.375). Multivariate logistic analysis showed that only female sex(OR = 5.83, 95%CI: 1.64-20.70, P = 0.028) and presence of lymphovascular invasion(OR = 13.18, 95%CI: 1.39-125.30, P = 0.020) were independent risk factors for LNM in mucosa-confined EGC, while histological type was not an independent risk factor for LNM in mucosa-confined EGC(P = 0.106).CONCLUSION for mucosal EGC, histological mixed-type is not an independent risk factor for LNM and could be managed in the same way as the undifferentiated type.展开更多
In order to reduce power consumption of sensor nodes and extend network survival time in the wireless sensor network （WSN）, sensor nodes are scheduled in an active or dormant mode. A chain-type WSN is fundamental y ...In order to reduce power consumption of sensor nodes and extend network survival time in the wireless sensor network （WSN）, sensor nodes are scheduled in an active or dormant mode. A chain-type WSN is fundamental y different from other types of WSNs, in which the sensor nodes are deployed along elongated geographic areas and form a chain-type network topo-logy structure. This paper investigates the node scheduling prob-lem in the chain-type WSN. Firstly, a node dormant scheduling mode is analyzed theoretical y from geographic coverage, and then three neighboring nodes scheduling criteria are proposed. Sec-ondly, a hybrid coverage scheduling algorithm and dead areas are presented. Final y, node scheduling in mine tunnel WSN with uniform deployment （UD）, non-uniform deployment （NUD） and op-timal distribution point spacing （ODS） is simulated. The results show that the node scheduling with UD and NUD, especial y NUD, can effectively extend the network survival time. Therefore, a strat-egy of adding a few mobile nodes which activate the network in dead areas is proposed, which can further extend the network survival time by balancing the energy consumption of nodes.展开更多
AIM To evaluate the incidence of lymph node metastasis （LNM） and its risk factors in patients with Siewert type Ⅰ and type Ⅱ pT1 adenocarcinomas.METHODS We enrolled 85 patients [69 men, 16 women; median age （ra...AIM To evaluate the incidence of lymph node metastasis （LNM） and its risk factors in patients with Siewert type Ⅰ and type Ⅱ pT1 adenocarcinomas.METHODS We enrolled 85 patients [69 men, 16 women; median age （range）, 67 （38-84） years] who had undergone esophagectomy or proximal gastrectomy for Siewert type Ⅰ and type Ⅱ pT1 adenocarcinomas. Predictive risk factors of LNM included age, sex, location of the tumor center, confirmed Barrett’s esophageal adenocarcinoma, tumor size, macroscopic tumor type, pathology, invasion depth, presence of ulceration, and lymphovascular invasion. Multivariate logistic regression analysis was used to identify factors predicting LNM. We also evaluated the frequencies of LNM for Siewert type Ⅰ and type Ⅱ pT1 adenocarcinomas in meta-data analysis.RESULTSLNMs were found in 11 out of 85 patients （12.9%, 95%CI： 5.8-20.0）. Only 1 of the 15 patients （6.6%, 95%CI： 0.0-19.2） who had a final diagnosis of pT1a adenocarcinoma had a positive LNM, whereas 10 of the 70 patients （14.2%, 95%CI： 6.0-22.4） with a final diagnosis of pT1b adenocarcinoma had positive LNM. Furthermore, only one of the 30 patients （3.3%, 95%CI： 0.0-9.7） with a tumor invasion depth within 500 μm from muscularis mucosae had positive LNM. Poor differentiation and lymphovascular invasion were independently associated with a risk of LNM. In meta-data analysis, 12 of the 355 patients （3.3%, 95%CI： 1.5-5.2） who had a final diagnosis of pT1a adenocarcinoma had a positive LNM, whereas 91 of the 438 patients （20.7%, 95%CI： 16.9-24.5） with a fnal diagnosis of pT1b adenocarcinoma had positive LNM.CONCLUSIONWe consider endoscopic submucosal dissection （ESD） is suitable for patients with Siewert type Ⅰ and type Ⅱ T1a adenocarcinomas. For patients with T1b adenocarcinoma, especially invasion depth is within 500 μm from muscularis mucosae with no other risk factor for LNM, diagnostic ESD could be a treatment option according to the overall status of patients and the presence of comorbidities.展开更多
子宫内膜癌是女性生殖系统最常见的恶性肿瘤,近年来子宫内膜癌诊疗中备受关注的热点问题,如淋巴脉管间隙浸润的定量评价、前哨淋巴结超分期和子宫内膜癌分子分型等,已经逐渐用于临床实践。目前,子宫内膜癌相关的新进展已被写入2023版国...子宫内膜癌是女性生殖系统最常见的恶性肿瘤,近年来子宫内膜癌诊疗中备受关注的热点问题,如淋巴脉管间隙浸润的定量评价、前哨淋巴结超分期和子宫内膜癌分子分型等,已经逐渐用于临床实践。目前,子宫内膜癌相关的新进展已被写入2023版国际妇产科联盟(International Federation of Gynecology and Obstetrics,FIGO)子宫内膜癌分期修订版本,并在临床推广应用。规范的病理诊断是评估子宫内膜癌患者预后和指导辅助治疗的重要依据,介绍2023版FIGO子宫内膜癌分期更新对病理诊断内容的影响,旨在帮助提高病理医生子宫内膜癌病理诊断的规范化及标准化水平,辅助临床医生更准确地理解和应用新分期。展开更多
近年来,节点地震采集技术发展迅速,在油气勘探中得到大规模推广应用。相对于有缆地震仪器,节点地震仪在带道能力、排列布设以及施工效率等方面具有显著的优势,但它无法实时获取采集的地震数据,给质量监控和数据评价带来一定困难。如何...近年来,节点地震采集技术发展迅速,在油气勘探中得到大规模推广应用。相对于有缆地震仪器,节点地震仪在带道能力、排列布设以及施工效率等方面具有显著的优势,但它无法实时获取采集的地震数据,给质量监控和数据评价带来一定困难。如何确保节点地震采集质量,保证节点地震仪工作状态良好成为采集施工中的重要环节,即保证设备的稳定性与安全性。结合野外地震采集施工模式和作业流程,介绍了多类型节点质控手机APP及质控数据综合分析平台设计思路,开展了节点通讯、手机定位及导航、节点位置监控、多模式巡检、数据可视化及统计分析等关键技术研究,并基于Visual Studio 2022集成开发环境,采用MVC设计模式研发了多类型节点质控手机APP及质控数据综合分析平台,解决了当前节点质控软件通用性不强,质控数据综合评价分析自动化程度低等问题。在实际生产应用中,软件性能稳定、运行流畅,大幅提高了节点地震仪质控效率及效果,可有效保障节点数据采集质量和资料品质,降低施工成本。展开更多
文摘Lung cancer is the most common cancer worldwide. In the United States, it causes more cancer-related deaths than the next four causes （breast cancer, prostate cancer, colon cancer, and pancreatic cancer） of cancer-related mortality combined （1）. About 30% of people have already progressed to stage III lung cancer and 40% to stage IV at the time they are diagnosed （2）. Although chest X-ray and sputum cytology, when applied in health check-ups, can identify some relatively small tumors, they are not able to lower the overall mortality （3）. More recently,
基金Supported by Medical Science and Technology Development Foundation of Nanjing Department of Health,No.201402032
文摘AIM To investigate the relationship between histological mixed-type of early gastric cancer(EGC) in the mucosa and submucosa and lymph node metastasis(LNM).METHODS This study included 298 patients who underwent gastrectomy for EGC between 2005 and 2012. Enrolled lesions were divided into groups of pure differentiated(pure D), pure undifferentiated(pure U), and mixed-type according to the proportion of the differentiated and undifferentiated components observed under a microscope. We reviewed the clinicopathological features, including age, sex, location, size, gross type, lymphovascular invasion, ulceration, and LNM, among the three groups. furthermore, we evaluated the predictors of LNM in the mucosa-confined EGC.RESULTS Of the 298 patients, 165(55.4%) had mucosa-confined EGC and 133(44.6%) had submucosa-invasive EGC. Only 13(7.9%) cases of mucosa-confined EGC and 30(22.6%) cases of submucosa-invasive EGC were observed to have LNM. The submucosal invasion(OR = 4.58, 95%CI: 1.23-16.97, P = 0.023), pure U type(OR = 4.97, 95%CI: 1.21-20.39, P = 0.026), and mixedtype(OR = 5.84, 95%CI: 1.05-32.61, P = 0.044) were independent risk factors for LNM in EGC. The rate of LNM in mucosa-confined EGC was higher in the mixedtype group(P = 0.012) and pure U group(P = 0.010) than in the pure D group, but no significant difference was found between the mixed-type group and pure U group(P = 0.739). Similarly, the rate of LNM in the submucosa-invasive EGC was higher in the mixedtype(P = 0.012) and pure U group(P = 0.009) than in the pure D group but was not significantly different between the mixed-type and pure U group(P = 0.375). Multivariate logistic analysis showed that only female sex(OR = 5.83, 95%CI: 1.64-20.70, P = 0.028) and presence of lymphovascular invasion(OR = 13.18, 95%CI: 1.39-125.30, P = 0.020) were independent risk factors for LNM in mucosa-confined EGC, while histological type was not an independent risk factor for LNM in mucosa-confined EGC(P = 0.106).CONCLUSION for mucosal EGC, histological mixed-type is not an independent risk factor for LNM and could be managed in the same way as the undifferentiated type.
基金supported by the China Doctoral Discipline New Teacher Foundation(200802901507)the Sichuan Province Basic Research Plan Project(2013JY0165)the Cultivating Programme of Excellent Innovation Team of Chengdu University of Technology(KYTD201301)
文摘In order to reduce power consumption of sensor nodes and extend network survival time in the wireless sensor network （WSN）, sensor nodes are scheduled in an active or dormant mode. A chain-type WSN is fundamental y different from other types of WSNs, in which the sensor nodes are deployed along elongated geographic areas and form a chain-type network topo-logy structure. This paper investigates the node scheduling prob-lem in the chain-type WSN. Firstly, a node dormant scheduling mode is analyzed theoretical y from geographic coverage, and then three neighboring nodes scheduling criteria are proposed. Sec-ondly, a hybrid coverage scheduling algorithm and dead areas are presented. Final y, node scheduling in mine tunnel WSN with uniform deployment （UD）, non-uniform deployment （NUD） and op-timal distribution point spacing （ODS） is simulated. The results show that the node scheduling with UD and NUD, especial y NUD, can effectively extend the network survival time. Therefore, a strat-egy of adding a few mobile nodes which activate the network in dead areas is proposed, which can further extend the network survival time by balancing the energy consumption of nodes.
文摘AIM To evaluate the incidence of lymph node metastasis （LNM） and its risk factors in patients with Siewert type Ⅰ and type Ⅱ pT1 adenocarcinomas.METHODS We enrolled 85 patients [69 men, 16 women; median age （range）, 67 （38-84） years] who had undergone esophagectomy or proximal gastrectomy for Siewert type Ⅰ and type Ⅱ pT1 adenocarcinomas. Predictive risk factors of LNM included age, sex, location of the tumor center, confirmed Barrett’s esophageal adenocarcinoma, tumor size, macroscopic tumor type, pathology, invasion depth, presence of ulceration, and lymphovascular invasion. Multivariate logistic regression analysis was used to identify factors predicting LNM. We also evaluated the frequencies of LNM for Siewert type Ⅰ and type Ⅱ pT1 adenocarcinomas in meta-data analysis.RESULTSLNMs were found in 11 out of 85 patients （12.9%, 95%CI： 5.8-20.0）. Only 1 of the 15 patients （6.6%, 95%CI： 0.0-19.2） who had a final diagnosis of pT1a adenocarcinoma had a positive LNM, whereas 10 of the 70 patients （14.2%, 95%CI： 6.0-22.4） with a final diagnosis of pT1b adenocarcinoma had positive LNM. Furthermore, only one of the 30 patients （3.3%, 95%CI： 0.0-9.7） with a tumor invasion depth within 500 μm from muscularis mucosae had positive LNM. Poor differentiation and lymphovascular invasion were independently associated with a risk of LNM. In meta-data analysis, 12 of the 355 patients （3.3%, 95%CI： 1.5-5.2） who had a final diagnosis of pT1a adenocarcinoma had a positive LNM, whereas 91 of the 438 patients （20.7%, 95%CI： 16.9-24.5） with a fnal diagnosis of pT1b adenocarcinoma had positive LNM.CONCLUSIONWe consider endoscopic submucosal dissection （ESD） is suitable for patients with Siewert type Ⅰ and type Ⅱ T1a adenocarcinomas. For patients with T1b adenocarcinoma, especially invasion depth is within 500 μm from muscularis mucosae with no other risk factor for LNM, diagnostic ESD could be a treatment option according to the overall status of patients and the presence of comorbidities.
文摘子宫内膜癌是女性生殖系统最常见的恶性肿瘤,近年来子宫内膜癌诊疗中备受关注的热点问题,如淋巴脉管间隙浸润的定量评价、前哨淋巴结超分期和子宫内膜癌分子分型等,已经逐渐用于临床实践。目前,子宫内膜癌相关的新进展已被写入2023版国际妇产科联盟(International Federation of Gynecology and Obstetrics,FIGO)子宫内膜癌分期修订版本,并在临床推广应用。规范的病理诊断是评估子宫内膜癌患者预后和指导辅助治疗的重要依据,介绍2023版FIGO子宫内膜癌分期更新对病理诊断内容的影响,旨在帮助提高病理医生子宫内膜癌病理诊断的规范化及标准化水平,辅助临床医生更准确地理解和应用新分期。
文摘近年来,节点地震采集技术发展迅速,在油气勘探中得到大规模推广应用。相对于有缆地震仪器,节点地震仪在带道能力、排列布设以及施工效率等方面具有显著的优势,但它无法实时获取采集的地震数据,给质量监控和数据评价带来一定困难。如何确保节点地震采集质量,保证节点地震仪工作状态良好成为采集施工中的重要环节,即保证设备的稳定性与安全性。结合野外地震采集施工模式和作业流程,介绍了多类型节点质控手机APP及质控数据综合分析平台设计思路,开展了节点通讯、手机定位及导航、节点位置监控、多模式巡检、数据可视化及统计分析等关键技术研究,并基于Visual Studio 2022集成开发环境,采用MVC设计模式研发了多类型节点质控手机APP及质控数据综合分析平台,解决了当前节点质控软件通用性不强,质控数据综合评价分析自动化程度低等问题。在实际生产应用中,软件性能稳定、运行流畅,大幅提高了节点地震仪质控效率及效果,可有效保障节点数据采集质量和资料品质,降低施工成本。
