Purpose: Benign strictures of the esophagus are commonly encountered in clinical practice and are difficult to manage conservatively. This study aimed to establish a novel animal model of benign esophageal stricture b...Purpose: Benign strictures of the esophagus are commonly encountered in clinical practice and are difficult to manage conservatively. This study aimed to establish a novel animal model of benign esophageal stricture by using corrosive-induced injury in rabbits with an injection of sodium hydroxide(NaOH) via a self-made endoscopic injection needle. Materials and Methods: Corrosive injury of the esophagus was induced in 10 rabbits by administration of 1 mL of 1.5% NaOH using a laryngoscope with a self-made endoscopic injection needle. The self-made injection needle was fabricated by modification of the core of an endoscopic injection needle. The laryngoscope examination was performed at 2 weeks and 4 weeks after induction of corrosive injury; esophagography was also performed at 4 weeks to assesse sophageals tricture.A lla nimalsw eree uthanizedat th een dof the fourth week; the esophagus was removed, and stained sectionsw eree xaminedm icroscopically. Results: Laryngoscope examination at 2 weeks showed ulceration. At the end of fo urth we e k,laryngosco py,r a diolo gical, and gross exa m inations showed successful in ductionof e s ophagea l stric turein a llanimal s,without any c omp licatio n.The m eanst r ic t ure inde x at the en dof fourth week wa s49.54±3. 61%; the mean le ngth of stricture w as18.0± 2.5mm.Micros copicexa mina tionrevea ledf ocalulceratio nand subm ucosalth i cke ning secondary to fibrosis. Conclusion:Rab bit esop hageal stri ctu re induced us ing lary ngosc opy with endosco pic injec tion of a sm all am ount of lowcon centration s odium hyd roxid e is a t echn ica lly simp le,safe,and re produ cible meth od for cre atio n of an animal m odel of esophageal stricture.This model can be useful for developing new treatment methods for esop hageal s tricture.展开更多
BACKGROUND In microwave ablation(MWA), although computed tomography(CT) scanning can overcome gas interference, it cannot achieve real-time localization. Therefore, the puncture technique is more important in CT-guide...BACKGROUND In microwave ablation(MWA), although computed tomography(CT) scanning can overcome gas interference, it cannot achieve real-time localization. Therefore, the puncture technique is more important in CT-guided ablation.AIM To compare the fine needle-assisted puncture(FNP) positioning technique and the conventional puncture(CP) technique for the safety and efficacy of CT-guided MWA in treating hepatocellular carcinoma(HCC).METHODS This retrospective study included 124 patients with 166 tumor nodules from February 2018 and June 2021. Seventy patients received CT-guided MWA under the FNP technique(FNP group), and 54 patients received MWA under the CP technique(CP group). Intergroup comparisons were made regarding local tumor progression(LTP), recurrence-free survival(RFS), overall survival(OS), and complications. The influencing variables of LTP and RFS were analyzed through univariate and multivariate regressions.RESULTS The 1-, 2-, and 3-year cumulative incidences of LTP in the FNP group were significantly lower than those in the CP group(7.4%, 12.7%, 21.3% vs 13.7%, 32.9%, 36.4%;P = 0.038). The 1-, 2-, and 3-year RFS rates in the FNP group were significantly higher than those in the CP group(80.6%, 73.3%, 64.0% vs 83.3%,39.4%, and 32.5%, respectively;P = 0.008). The FNP technique independently predicted LTP and RFS. Minor complications in the FNP group were lower than those in the CP group(P < 0.001). The difference in median OS was insignificant between the FNP and CP groups(P = 0.229).CONCLUSION The FNP technique used in CT-guided MWA may improve outcomes in terms of LTP, RFS, and procedure-related complications for HCC.展开更多
基金This study was supported by the National Natural Science Foundation of China(No.81370041,81371659,81171437,81571773)
文摘Purpose: Benign strictures of the esophagus are commonly encountered in clinical practice and are difficult to manage conservatively. This study aimed to establish a novel animal model of benign esophageal stricture by using corrosive-induced injury in rabbits with an injection of sodium hydroxide(NaOH) via a self-made endoscopic injection needle. Materials and Methods: Corrosive injury of the esophagus was induced in 10 rabbits by administration of 1 mL of 1.5% NaOH using a laryngoscope with a self-made endoscopic injection needle. The self-made injection needle was fabricated by modification of the core of an endoscopic injection needle. The laryngoscope examination was performed at 2 weeks and 4 weeks after induction of corrosive injury; esophagography was also performed at 4 weeks to assesse sophageals tricture.A lla nimalsw eree uthanizedat th een dof the fourth week; the esophagus was removed, and stained sectionsw eree xaminedm icroscopically. Results: Laryngoscope examination at 2 weeks showed ulceration. At the end of fo urth we e k,laryngosco py,r a diolo gical, and gross exa m inations showed successful in ductionof e s ophagea l stric turein a llanimal s,without any c omp licatio n.The m eanst r ic t ure inde x at the en dof fourth week wa s49.54±3. 61%; the mean le ngth of stricture w as18.0± 2.5mm.Micros copicexa mina tionrevea ledf ocalulceratio nand subm ucosalth i cke ning secondary to fibrosis. Conclusion:Rab bit esop hageal stri ctu re induced us ing lary ngosc opy with endosco pic injec tion of a sm all am ount of lowcon centration s odium hyd roxid e is a t echn ica lly simp le,safe,and re produ cible meth od for cre atio n of an animal m odel of esophageal stricture.This model can be useful for developing new treatment methods for esop hageal s tricture.
基金Supported by the Fujian Key Laboratory of Translational Cancer MedicineFujian Provincial Clinical Research Center for Cancer Radiotherapy and Immunotherapy,China,No. 2020Y2012。
文摘BACKGROUND In microwave ablation(MWA), although computed tomography(CT) scanning can overcome gas interference, it cannot achieve real-time localization. Therefore, the puncture technique is more important in CT-guided ablation.AIM To compare the fine needle-assisted puncture(FNP) positioning technique and the conventional puncture(CP) technique for the safety and efficacy of CT-guided MWA in treating hepatocellular carcinoma(HCC).METHODS This retrospective study included 124 patients with 166 tumor nodules from February 2018 and June 2021. Seventy patients received CT-guided MWA under the FNP technique(FNP group), and 54 patients received MWA under the CP technique(CP group). Intergroup comparisons were made regarding local tumor progression(LTP), recurrence-free survival(RFS), overall survival(OS), and complications. The influencing variables of LTP and RFS were analyzed through univariate and multivariate regressions.RESULTS The 1-, 2-, and 3-year cumulative incidences of LTP in the FNP group were significantly lower than those in the CP group(7.4%, 12.7%, 21.3% vs 13.7%, 32.9%, 36.4%;P = 0.038). The 1-, 2-, and 3-year RFS rates in the FNP group were significantly higher than those in the CP group(80.6%, 73.3%, 64.0% vs 83.3%,39.4%, and 32.5%, respectively;P = 0.008). The FNP technique independently predicted LTP and RFS. Minor complications in the FNP group were lower than those in the CP group(P < 0.001). The difference in median OS was insignificant between the FNP and CP groups(P = 0.229).CONCLUSION The FNP technique used in CT-guided MWA may improve outcomes in terms of LTP, RFS, and procedure-related complications for HCC.
