AIM: To investigate potential therapeutic recommendations for endoscopic and surgical resection of T1a/ T1b esophageal neoplasms. METHODS: A thorough search of electronic databases MEDLINE, Embase, Pubmed and Cochrane...AIM: To investigate potential therapeutic recommendations for endoscopic and surgical resection of T1a/ T1b esophageal neoplasms. METHODS: A thorough search of electronic databases MEDLINE, Embase, Pubmed and Cochrane Library, from 1997 up to January 2011 was performed. An analysis was carried out, pooling the effects of outcomes of 4241 patients enrolled in 80 retrospective studies. For comparisons across studies, each reporting on only one endoscopic method, we used a random effects meta-regression of the log-odds of the outcome of treatment in each study. "Neural networks" as a data mining technique was employed in order to establish a prediction model of lymph node status in superficial submucosal esophageal carcinoma. Another data mining technique, the "feature selection and root cause analysis", was used to identify the most impor-tant predictors of local recurrence and metachronous cancer development in endoscopically resected patients, and lymph node positivity in squamous carcinoma (SCC) and adenocarcinoma (ADC) separately in surgically resected patients. RESULTS: Endoscopically resected patients: Low grade dysplasia was observed in 4% of patients, high grade dysplasia in 14.6%, carcinoma in situ in 19%, mucosal cancer in 54%, and submucosal cancer in 16% of patients. There were no significant differences between endoscopic mucosal resection and endoscopic submucosal dissection (ESD) for the following parameters: complications, patients submitted to surgery, positive margins, lymph node positivity, local recurrence and metachronous cancer. With regard to piecemeal resection, ESD performed better since the number of cases was significantly less [coefficient: -7.709438, 95%CI: (-11.03803, -4.380844), P < 0.001]; hence local recurrence rates were significantly lower [coefficient: -4.033528, 95%CI: (-6.151498, -1.915559),P < 0.01]. A higher rate of esophageal stenosis was observed following ESD [coefficient: 7.322266, 95%CI: (3.810146, 10.83439), P < 0.001]. A significantly greater number of SCC patients wer展开更多
The construction of a smooth muscle layer for blood vessel through electrospinning method plays a key role in vascular tissue engineering.However,smooth muscle cells(SMCs)penetration into the electrospun graft to form...The construction of a smooth muscle layer for blood vessel through electrospinning method plays a key role in vascular tissue engineering.However,smooth muscle cells(SMCs)penetration into the electrospun graft to form a smooth muscle layer is limited due to the dense packing of fibers and lack of inducing factors.In this paper,silk fibroin/poly(L-lactide-e-caplacton)(SF/PLLA-CL)vascular graft loaded with platelet-rich growth factor(PRGF)was fabricated by electrospinning.The in vitro results showed that SMCs cultured in the graft grew fast,and the incorporation of PRGF could induce deeper SMCs infiltrating compared to the SF/PLLA-CL graft alone.Mechanical properties measurement showed that PRGF-incorporated graft had proper tensile stress,suture retention strength,burst pressure and compliance which could match the demand of native blood vessel.The success in the fabrication of PRGF-incorporated SF/PLLA-CL graft to induce fast SMCs growth and their strong penetration into graft has important application for tissue-engineered blood vessels.展开更多
Pancreatic fistula is a common complication of distal pancreatectomy; although various surgical procedures have been proposed, no clear advantage is evident for a single technique. We herein report the case of a 38-ye...Pancreatic fistula is a common complication of distal pancreatectomy; although various surgical procedures have been proposed, no clear advantage is evident for a single technique. We herein report the case of a 38-year-old patient affected by an advanced gastric carcinoma infiltrating the pancreas body, with exten- sive nodal metastases involving the celiac trunk, who underwent total gastrectomy with lymphadenectomy, distal pancreatectomy and resection en bloc of the celiac trunk (Appleby operation). At the end of the demolitive phase, the pancreatic stump and the aorta at the level of the celiac ligature were covered with a layer of Tachosil, a horse collagen sponge made with human coagulation factors (fibrinogen and thrombin). Presenting this case, we wish to highlight the possible sealing effect of this product and hypothesize a role in preventing pancreatic fistula and postoperative lymphorrhagia from extensive nodal dissection.展开更多
目的:探讨子宫颈癌淋巴脉管间隙浸润(lymph-vascular space invasion,LVSI)及宫旁浸润与其他临床病理因素的关系。方法:回顾性分析2009年1月至2019年1月期间于西安交通大学第一附属医院妇科接受手术治疗1245例早期子宫颈癌患者的临床资...目的:探讨子宫颈癌淋巴脉管间隙浸润(lymph-vascular space invasion,LVSI)及宫旁浸润与其他临床病理因素的关系。方法:回顾性分析2009年1月至2019年1月期间于西安交通大学第一附属医院妇科接受手术治疗1245例早期子宫颈癌患者的临床资料,分别根据是否LVSI及宫旁浸润分为LVSI组、无LVSI组和宫旁浸润组、无宫旁浸润组,采用单因素和多因素Logistic回归分析脉管及宫旁浸润危险因素。结果:1245例LVSI率14.1%(175/1245),宫旁浸润率1.85%(23/1245)。单因素分析显示LVSI的发生与病灶类型、病理类型、肿瘤细胞分化程度、子宫颈浸润深度、淋巴转移、切缘阳性、宫旁浸润比较,差异有统计学意义(P<0.05)。根据淋巴转移情况分层分析发现,在淋巴未转移组LVSI的发生率与年龄、病灶类型、病理类型、子宫颈浸润深度比较,差异有统计学意义(P均<0.05)。Logistic回归分析显示病灶类型为内生型、病理为鳞癌、子宫颈深肌层浸润和淋巴转移相较于非内生型、非鳞癌、子宫颈浸润浅肌层、无淋巴转移早期子宫颈癌患者是发生LVSI的独立危险因素(OR>1,P<0.05)。单因素分析显示宫旁浸润与病灶类型、子宫颈浸润深度、累及阴道、累及宫体下段、切缘阳性、淋巴转移、LVSI有关(P<0.05)。Logistic回归分析示病灶类型为内生型、累及宫体下段、淋巴转移相较于非内生型、未累及宫体下段、无淋巴转移的早期子宫颈癌患者是发生宫旁浸润的独立危险因素(OR>1,P<0.05)。结论:子宫颈深肌层浸润、淋巴结转移、内生型的子宫颈鳞癌患者更可能发生LVSI;病灶类型为内生型、累及宫体下段、淋巴转移的患者更可能发生宫旁浸润。展开更多
文摘AIM: To investigate potential therapeutic recommendations for endoscopic and surgical resection of T1a/ T1b esophageal neoplasms. METHODS: A thorough search of electronic databases MEDLINE, Embase, Pubmed and Cochrane Library, from 1997 up to January 2011 was performed. An analysis was carried out, pooling the effects of outcomes of 4241 patients enrolled in 80 retrospective studies. For comparisons across studies, each reporting on only one endoscopic method, we used a random effects meta-regression of the log-odds of the outcome of treatment in each study. "Neural networks" as a data mining technique was employed in order to establish a prediction model of lymph node status in superficial submucosal esophageal carcinoma. Another data mining technique, the "feature selection and root cause analysis", was used to identify the most impor-tant predictors of local recurrence and metachronous cancer development in endoscopically resected patients, and lymph node positivity in squamous carcinoma (SCC) and adenocarcinoma (ADC) separately in surgically resected patients. RESULTS: Endoscopically resected patients: Low grade dysplasia was observed in 4% of patients, high grade dysplasia in 14.6%, carcinoma in situ in 19%, mucosal cancer in 54%, and submucosal cancer in 16% of patients. There were no significant differences between endoscopic mucosal resection and endoscopic submucosal dissection (ESD) for the following parameters: complications, patients submitted to surgery, positive margins, lymph node positivity, local recurrence and metachronous cancer. With regard to piecemeal resection, ESD performed better since the number of cases was significantly less [coefficient: -7.709438, 95%CI: (-11.03803, -4.380844), P < 0.001]; hence local recurrence rates were significantly lower [coefficient: -4.033528, 95%CI: (-6.151498, -1.915559),P < 0.01]. A higher rate of esophageal stenosis was observed following ESD [coefficient: 7.322266, 95%CI: (3.810146, 10.83439), P < 0.001]. A significantly greater number of SCC patients wer
基金This work was supported by National Natural Science Foundation of China(31500784)China Postdoctoral Science Foundation Funded Project(2015M580790)Program of Introducing Talents of Discipline to Universities(B16033).
文摘The construction of a smooth muscle layer for blood vessel through electrospinning method plays a key role in vascular tissue engineering.However,smooth muscle cells(SMCs)penetration into the electrospun graft to form a smooth muscle layer is limited due to the dense packing of fibers and lack of inducing factors.In this paper,silk fibroin/poly(L-lactide-e-caplacton)(SF/PLLA-CL)vascular graft loaded with platelet-rich growth factor(PRGF)was fabricated by electrospinning.The in vitro results showed that SMCs cultured in the graft grew fast,and the incorporation of PRGF could induce deeper SMCs infiltrating compared to the SF/PLLA-CL graft alone.Mechanical properties measurement showed that PRGF-incorporated graft had proper tensile stress,suture retention strength,burst pressure and compliance which could match the demand of native blood vessel.The success in the fabrication of PRGF-incorporated SF/PLLA-CL graft to induce fast SMCs growth and their strong penetration into graft has important application for tissue-engineered blood vessels.
文摘Pancreatic fistula is a common complication of distal pancreatectomy; although various surgical procedures have been proposed, no clear advantage is evident for a single technique. We herein report the case of a 38-year-old patient affected by an advanced gastric carcinoma infiltrating the pancreas body, with exten- sive nodal metastases involving the celiac trunk, who underwent total gastrectomy with lymphadenectomy, distal pancreatectomy and resection en bloc of the celiac trunk (Appleby operation). At the end of the demolitive phase, the pancreatic stump and the aorta at the level of the celiac ligature were covered with a layer of Tachosil, a horse collagen sponge made with human coagulation factors (fibrinogen and thrombin). Presenting this case, we wish to highlight the possible sealing effect of this product and hypothesize a role in preventing pancreatic fistula and postoperative lymphorrhagia from extensive nodal dissection.
文摘目的:探讨子宫颈癌淋巴脉管间隙浸润(lymph-vascular space invasion,LVSI)及宫旁浸润与其他临床病理因素的关系。方法:回顾性分析2009年1月至2019年1月期间于西安交通大学第一附属医院妇科接受手术治疗1245例早期子宫颈癌患者的临床资料,分别根据是否LVSI及宫旁浸润分为LVSI组、无LVSI组和宫旁浸润组、无宫旁浸润组,采用单因素和多因素Logistic回归分析脉管及宫旁浸润危险因素。结果:1245例LVSI率14.1%(175/1245),宫旁浸润率1.85%(23/1245)。单因素分析显示LVSI的发生与病灶类型、病理类型、肿瘤细胞分化程度、子宫颈浸润深度、淋巴转移、切缘阳性、宫旁浸润比较,差异有统计学意义(P<0.05)。根据淋巴转移情况分层分析发现,在淋巴未转移组LVSI的发生率与年龄、病灶类型、病理类型、子宫颈浸润深度比较,差异有统计学意义(P均<0.05)。Logistic回归分析显示病灶类型为内生型、病理为鳞癌、子宫颈深肌层浸润和淋巴转移相较于非内生型、非鳞癌、子宫颈浸润浅肌层、无淋巴转移早期子宫颈癌患者是发生LVSI的独立危险因素(OR>1,P<0.05)。单因素分析显示宫旁浸润与病灶类型、子宫颈浸润深度、累及阴道、累及宫体下段、切缘阳性、淋巴转移、LVSI有关(P<0.05)。Logistic回归分析示病灶类型为内生型、累及宫体下段、淋巴转移相较于非内生型、未累及宫体下段、无淋巴转移的早期子宫颈癌患者是发生宫旁浸润的独立危险因素(OR>1,P<0.05)。结论:子宫颈深肌层浸润、淋巴结转移、内生型的子宫颈鳞癌患者更可能发生LVSI;病灶类型为内生型、累及宫体下段、淋巴转移的患者更可能发生宫旁浸润。
