| 1 | Factors predicting survival in patients with proximal gastric carcinoma involving the esophagus显示文摘AIM:To investigate the clinicopathologic features which predict surgical overall survival in patients with proximal gastric carcinoma involving the esophagus (PGCE).METHODS:Electronic pathology database established in the Department of Pathology of the Nanjing Drum Tower Hospital was searched for consecutive resection cases of proximal gastric carcinoma over the period from May 2004 through July 2009.Each retrieved pathology report was reviewed and the cases with tumors crossing the gastroesophageal junction line were selected as PGCE.Each tumor was re-staged,following the guidelines on esophageal adenocarcinoma,according to the 7th edition of the American Joint Commission on Cancer Staging Manual.All histology slides were studied along with the pathology report for a retrospective analysis of 13 clinicopathologic features,i.e.,age,gender,Helicobacter pylori (H.pylori ) infection,surgical modality,Siewert type,tumor Bormann's type,size,differentiation,histology type,surgical margin,lymphovascular and perineural invasion,and pathologic stage in relation to survival after surgical resection.Prognostic factors for overall survival were assessed with uniand multi-variate analyses.RESULTS:Patients' mean age was 65 years (range:47-90 years).The male:female ratio was 3.3.The 1-,3and 5-year overall survival rates were 87%,61% and 32%,respectively.By univariate analysis,age,male gender,H.pylori ,tumor Bormann's type,size,histology type,surgical modality,positive surgical margin,lymphovascular invasion,and pT stage were not predictive for overall survival;in contrast,perineural invasion (P = 0.003),poor differentiation (P = 0.0003),> 15 total lymph nodes retrieved (P = 0.008),positive lymph nodes (P = 0.001),and distant metastasis (P = 0.005) predicted poor post-operative overall survival.Celiac axis nodal metastasis was associated with significantly worse overall survival (P = 0.007).By multivariate analysis,≥ 16 positive nodes (P = 0.018),lymph node ratio > 0.2 (P = 0.003),and overall pathologic stage (P = 0.002) were independent predictors for poor overall survival after resection.CONCLUSION:Patients with PGCE showed worse overall survival in elderly,high nodal burden and advanced pathologic stage.This cancer may be more accurately staged as gastric,than esophageal,cancer. | Yi-Fen Zhang Jiong Shi Hui-Ping Yu An-Ning Feng Xiang-Shan Fan Gregory Y Lauwers Hiroshi Mashimo Jason S Gold Gang Chen Qin Huang | 2012 | World Journal of Gastroenterology2012，18，27： | 12 |
| 3 | 关于金属板材渐进成型的高级特征检测算法(英文)显示文摘提出一种关于单点渐进成形(SPIF)部件的特征检测的新型算法。基于自建的关于SPIF的CAPP专家系统,通过对几何形状、曲率、位置、方位、加工参数的综合分析,可以检测33种不同的特征可以检测。为了加快检测过程,首先使用多级边缘分割算法创建一个边缘特征的框架。随后在这个框架中,区域生长算法被用来检测剩余的特征。这个检测方法已经成功地被不同的实验所验证。采用一个双曲面半球的实验案例描述通过对检测的特征进行补偿,从而生成最优的刀具路径。结果显示,优化的刀具路径对于成形部件的精度有很大的提高。 | Amar Kumar BEHERA Bert LAUWERS Joost R. DUFLOU | 2012 | 中国有色金属学会会刊:英文版2012，22，S2： | 3 |
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