G. R. Caravaca, Ignacio Juez-Martel, Ma Victoria De-Torres-Olombrada, M. Durán-Poveda
{"title":"Role of the complete pathological response in rectal cancer: Value as a prognostic factor","authors":"G. R. Caravaca, Ignacio Juez-Martel, Ma Victoria De-Torres-Olombrada, M. Durán-Poveda","doi":"10.31487/J.JSO.2018.01.005","DOIUrl":"https://doi.org/10.31487/J.JSO.2018.01.005","url":null,"abstract":"Objective \u0000To study the effect of the pathologic complete response (pCR) on the survival of patients treated with \u0000surgery and neoadjuvant chemo-radiotherapy in locally advanced non-metastatic rectal carcinoma (LARC). \u0000Materials and methodology \u0000We underwent an observational retrospective analysis of cohorts. The recruitment was carried out by means \u0000of non-probabilistic consecutive inclusion of patients with rectal cancer treated between January 2009 and \u0000December 2016 with surgery and neoadjuvant chemo-radiotherapy. The patients recruited had been \u0000diagnosed with locally advanced non-metastatic rectal cancer. cT3-4 o N+. based on the American Joint \u0000Committee on Cancer (AJCC) 2010. with histological confirmation of adenocarcinoma and no treatment \u0000with induction chemotherapy. The pathologic response was calibrated in accordance with the Ryan system. \u0000Survival was calculated with multivariate Cox regression analysis \u0000Results \u0000Pathologic complete response was reached by 19.2% Patients. The disease free survival was significantly \u0000lower in the no pathologic complete response (HR 0.099. p value 0.025). The progression in the group of \u0000patients with pathological complete response occurred in only one patient and have local and distal \u0000component compared to 39 patients in no pCR 21.2% distant metastases and 3.8% locally relapse. \u0000Perineural invasion and adjuvant chemotherapy were also significatly associated with disease free survival \u0000Conclusions \u0000The pathological complete response is a good prognosis factor in patients treated with surgery and nCRT \u0000in LARC with distal and local relapse. Perineural invasion and adjuvant chemotherapy were also good \u0000prognostic factors.","PeriodicalId":320469,"journal":{"name":"Endoprosthetic Total Scapula Replacement Versus Suspension Arthroplasty Following Tumor Resection","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125349680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Patterson, J. Thomson, J. Benevenia, Kathleen S Beebe, Michael N. Kang
{"title":"Biomechanical Study of Simulated Metastatic Peri-Acetabular Defects","authors":"F. Patterson, J. Thomson, J. Benevenia, Kathleen S Beebe, Michael N. Kang","doi":"10.31487/J.JSO.2018.01.003","DOIUrl":"https://doi.org/10.31487/J.JSO.2018.01.003","url":null,"abstract":"Peri-acetabular metastasis presents the risk of fracture. However, the relationship between bone loss and \u0000fracture risk is unknown. Utilizing fresh frozen intact cadaver pelves, Harrington class I lesions were \u0000simulated. Lesions were categorized as small ( 40%) Axial loading was applied in a quasistatic mechanism by a mechanical testing system to catastrophic failure, with the load-to-failure force being \u0000measured. There was statistical difference in the load-to-failure force between hemi-pelves with large \u0000defects and their matched controls. It was found that mean load-to-failure strength of a hemi-pelvis with a \u0000Class I defect was more than 2.3-2.45 times the calculated hip joint reactive force. Thus, it was concluded \u0000that a pelvis with a peri-acetabular defect of greater than 40% has a significantly lower load-to-failure \u0000strength compared to an intact pelvis. However, even this large Class I defect will fracture only at supraphysiologic loads and the hip joint may not normally be exposed to forces that high.","PeriodicalId":320469,"journal":{"name":"Endoprosthetic Total Scapula Replacement Versus Suspension Arthroplasty Following Tumor Resection","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121274489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}