This review discusses the incidence,risk factors,management and outcome of colonoscopic perforation(CP).The incidence of CP ranges from 0.016% to 0.2% following diagnostic colonoscopies and could be up to 5% following...This review discusses the incidence,risk factors,management and outcome of colonoscopic perforation(CP).The incidence of CP ranges from 0.016% to 0.2% following diagnostic colonoscopies and could be up to 5% following some colonoscopic interventions.The perforations are frequently related to therapeutic colonoscopies and are associated with patients of advanced age or with multiple comorbidities.Management of CP is mainly based on patients' clinical grounds and their underlying colorectal diseases.Current therapeutic approaches include conservative management(bowel rest plus the administration of broadspectrum antibiotics),endoscopic management,and operative management(open or laparoscopic approach).The applications of each treatment are discussed.Overall outcomes of patients with CP are also addressed.展开更多
AIM: To assess the incidence and risk factors associated with colonic perforation due to colonoscopy. METHODS: This was a retrospective cross-sectional study. Patients were retrospectively eligible for inclusion if th...AIM: To assess the incidence and risk factors associated with colonic perforation due to colonoscopy. METHODS: This was a retrospective cross-sectional study. Patients were retrospectively eligible for inclusion if they were 18 years and older and had an inpatient or outpatient colonoscopy procedure code in any facility within the Geisinger Health System during the period from January 1, 2002 to August 25, 2010. Data are presented as median and inter-quartile range, for continuous variables, and as frequency and percentage for categorical variables. Baseline comparisons across those with and without a perforation were made using the two-sample t -test and Pearson's χ2 test, as appropriate.RESULTS: A total of 50 perforations were diagnosed out of 80118 colonoscopies, which corresponded to an incidence of 0.06% (95%CI: 0.05-0.08) or a rate of 6.2 per 10000 colonoscopies. All possible risk factors associated with colonic perforation with a P -value < 0.1 were checked for inclusion in a multivariable logbinomial regression model predicting 7-d colonic perforation. The final model resulted in the following risk factors which were significantly associated with risk of colonic perforation: age, gender, body mass index, albumin level, intensive care unit (ICU) patients, inpatient setting, and abdominal pain and Crohn's disease as indications for colonoscopy. CONCLUSION: The cumulative 7 d incidence of colonic perforation in this cohort was 0.06%. Advanced age and female gender were significantly more likely to have perforation. Increasing albumin and BMI resulted in decreased risk of colonic perforation. Having a colonoscopy indication of abdominal pain or Crohn's disease resulted in a higher risk of colonic perforation. Colonoscopies performed in inpatients and particularly the ICU setting had substantially greater odds of perforation. Biopsy and polypectomy did not increase the risk of perforation and only three perforations occurred with screening colonoscopy.展开更多
Introduction: Laparoscopic assisted colonoscopic polypectomies have been well described in the literature and are well established in surgical practice, for removal of large, inaccessible, or flat based polyps. Laparo...Introduction: Laparoscopic assisted colonoscopic polypectomies have been well described in the literature and are well established in surgical practice, for removal of large, inaccessible, or flat based polyps. Laparoscope allows the endoscopist a serosal viewpoint and thus clear indication of perforation, in addition to enhancing endoscopic positioning through colonic mobilisation, facilitating polypectomy. We describe a previously rarely published technique, in which the colonoscope directs the surgeon to polyps and laparoscopy enables wedge resection of benign polyps using Endo GIA staplers. Using this method, the colonoscope provides an intra-luminal view ensuring adequate excision with margins whilst the laparoscope provides intra-peritoneal access for the wedge resection. Methods: This is a case series of 12 patients with large tubulovillous adenomas, found and biopsied at colonoscopy. Under a general anaesthetic, an on table colonoscopy was performed to identify and reassess the polyp, whilst a laparoscopy was performed to excise the polyp via wedge resection, using the endoscopic view as guidance. Results: The polyp was identified and completely resected in our 12 patients. All patients were discharged on the first post-operative day. Of the polyps excised, a focus of adenocarcinoma was detected in one and an adjacent endocrine tumour was found in another patient in histology along with tubulovillous adenoma. Rest were all tubulovillous adenomas only. Conclusion: We propose that this technique should be regarded as an alternative to Right hemicolectomies and difficult endoscopic mucosal resections for large adenomas, and be regarded as a definitive and safe procedure in its own right.展开更多
AIM: To evaluate the full-spectrum endoscopy(FUSE) colonoscopy system as the first report on the utility thereof in a Korean population.METHODS: We explored the efficacy of the FUSE colonoscopy in a retrospective, sin...AIM: To evaluate the full-spectrum endoscopy(FUSE) colonoscopy system as the first report on the utility thereof in a Korean population.METHODS: We explored the efficacy of the FUSE colonoscopy in a retrospective, single-center feasibility study performed between February 1 and July 20, 2015. A total of 262 subjects(age range: 22-80) underwent the FUSE colonoscopy for colorectal cancer screening, polyp surveillance, or diagnostic evaluation. The cecal intubation success rate, the polyp detection rate(PDR), the adenoma detection rate(ADR), and the diverticulum detection rate(DDR), were calculated. Also, the success rates of therapeutic interventions were evaluated with biopsy confirmation.RESULTS: All patients completed the study and the success rates of cecal and terminal ileal intubation were 100% with the FUSE colonoscope; we found 313 polyps in 142 patients and 173 adenomas in 95. The overall PDR, ADR and DDR were 54.2%, 36.3%, and 25.2%, respectively, and were higher in males, and increased with age. The endoscopists and nurses involved considered that the full-spectrum colonoscope improved navigation and orientation within the colon.No colonoscopy was aborted because of colonoscope malfunction.CONCLUSION: The FUSE colonoscopy yielded a higher PDR, ADR, DDR than did traditional colonoscopy, without therapeutic failure or complications, showing feasible, effective, and safe in this first Korean trial.展开更多
The moving principle of a colonoscopic robot is presented in this paper. The robot mainly consists of soft mobile mechanism for earthworm locomotion and turning mechanism based on shape memory effect. The soft mobile ...The moving principle of a colonoscopic robot is presented in this paper. The robot mainly consists of soft mobile mechanism for earthworm locomotion and turning mechanism based on shape memory effect. The soft mobile mechanism contacts colon wall with air in inflatable balloons, so the robot has better soft and non invasive properties. The turning mechanism can be actively bent by shape memory alloy components. It ensures the robot to adapt to the tortuous shape of colon. Therefore, the colonoscopic robot has good safety, lower working strength of surgeon and higher efficiency of colonooscopy.展开更多
Colonoscopic evaluation is an important tool in the evaluation of ulcerative colitis(UC).UC is divided by disease extent into proctitis,proctosigmoiditis,left-sided colitis,and pan-colitis.In addition,a cecal or peri-...Colonoscopic evaluation is an important tool in the evaluation of ulcerative colitis(UC).UC is divided by disease extent into proctitis,proctosigmoiditis,left-sided colitis,and pan-colitis.In addition,a cecal or peri-appendiceal patch and backwash ileitis are associated with UC.The extent and behavior of UC has been characterized further using various indices and scoring systems;among these systems is the Mayo Score,which is widely used in current clinical trials for new medications.As these medical therapies for UC have developed,achieving mucosal healing with medications has become an important therapeutic objective.展开更多
Colitis-associated colorectal cancer(CAC)is defined as a specific cluster of colorectal cancers that develop as a result of prolonged colitis in patients with inflammatory bowel disease(IBD).Patients with IBD,includin...Colitis-associated colorectal cancer(CAC)is defined as a specific cluster of colorectal cancers that develop as a result of prolonged colitis in patients with inflammatory bowel disease(IBD).Patients with IBD,including ulcerative colitis and Crohn’s disease,are known to have an increased risk of developing CAC.Although the incidence of CAC has significantly decreased over the past few decades,individuals with CAC have increased mortality compared to individuals with sporadic colorectal cancer,and the incidence of CAC increases with duration.Chronic inflammation is generally recognized as a major contributor to the pathogenesis of CAC.CAC has been shown to progress from colitis to dysplasia and finally to carcinoma.Accumulating evidence suggests that multiple immune-mediated pathways,DNA damage pathways,and pathogens are involved in the pathogenesis of CAC.Over the past decade,there has been an increasing effort to develop clinical approaches that could help improve outcomes for CAC patients.Colonoscopic surveillance plays an important role in reducing the risk of advanced and interval cancers.It is generally recommended that CAC patients undergo endoscopic removal or colectomy.This review summarizes the current understanding of CAC,particularly its epidemiology,mechanisms,and management.It focuses on the mechanisms that contribute to the development of CAC,covering advances in genomics,immunology,and the microbiome;presents evidence for management strategies,including endoscopy and colectomy;and discusses new strategies to interfere with the process and development of CAC.These scientific findings will pave the way for the management of CAC in the near future.展开更多
BACKGROUND Although the usefulness of endoscopic scores,such as the Mayo Endoscopic Subscore(MES),Ulcerative Colitis Endoscopic Index of Severity(UCEIS),and Ulcerative Colitis Colonoscopic Index of Severity(UCCIS),and...BACKGROUND Although the usefulness of endoscopic scores,such as the Mayo Endoscopic Subscore(MES),Ulcerative Colitis Endoscopic Index of Severity(UCEIS),and Ulcerative Colitis Colonoscopic Index of Severity(UCCIS),and biomarkers such as fecal calprotectin(FC)for predicting relapse in ulcerative colitis(UC)has been reported,few studies have included endoscopic scores for evaluating the entire colon.AIM To compare the usefulness of FC value and MES,UCEIS,and UCCIS for predicting relapse in patients with UC in clinical remission.METHODS In total,75 patients with UC in clinical and endoscopic remission who visited our institution between February 2019 and March 2022 were enrolled.The diagnosis of UC was confirmed based on the clinical presentation,endoscopic findings,and histology,according to the current established criteria for UC.Fecal samples were collected the day before or after the colonoscopy for measurement of FC.Endoscopic evaluations were performed using MES,UCEIS,and UCCIS.The primary outcome measure of this study was the assessment of the association between relapse within 12 mo and MES,UCEIS,UCCIS,and FC.The secondary outcome was the comparison between endoscopic scores and biomarkers in en-rolled patients with UC with mucosal healing.RESULTSFC and UCCIS showed a significant correlation with UCEIS (r = 0.537, P < 0.001 and r = 0.957, P < 0.001, respectively).Receiver-operating characteristic analysis for predicting MES 0 showed that the area under the curve ofUCCIS was significantly higher than that of FC (P < 0.01). During the 1-year observation period, 18 (24%) patientsexperienced a relapse, and both the FC and UCCIS of the relapse group were significantly higher than that of theremission group. The cut-off values for predicting relapse were set at FC = 323 mg/kg and UCCIS = 10.2. The areaunder the curve of the receiver-operating characteristic analysis for predicting relapse did not show a significantdifference between FC and UCCIS. The accuracy of the endoscopic scores and biomarkers in predicting relapse was86.7% for UCCIS, 85.3% for UCEIS, 76.0% for FC, and 73.3% for MES.CONCLUSIONThe three endoscopic scores and FC may predict UC relapse during clinical remission. Among these scores, UCEISmay be the most useful in terms of ease of evaluation and accuracy.展开更多
基金Supported by Faculty of Medicine,Siriraj Hospital,Mahidol University,Bangkok,Thailand
文摘This review discusses the incidence,risk factors,management and outcome of colonoscopic perforation(CP).The incidence of CP ranges from 0.016% to 0.2% following diagnostic colonoscopies and could be up to 5% following some colonoscopic interventions.The perforations are frequently related to therapeutic colonoscopies and are associated with patients of advanced age or with multiple comorbidities.Management of CP is mainly based on patients' clinical grounds and their underlying colorectal diseases.Current therapeutic approaches include conservative management(bowel rest plus the administration of broadspectrum antibiotics),endoscopic management,and operative management(open or laparoscopic approach).The applications of each treatment are discussed.Overall outcomes of patients with CP are also addressed.
文摘AIM: To assess the incidence and risk factors associated with colonic perforation due to colonoscopy. METHODS: This was a retrospective cross-sectional study. Patients were retrospectively eligible for inclusion if they were 18 years and older and had an inpatient or outpatient colonoscopy procedure code in any facility within the Geisinger Health System during the period from January 1, 2002 to August 25, 2010. Data are presented as median and inter-quartile range, for continuous variables, and as frequency and percentage for categorical variables. Baseline comparisons across those with and without a perforation were made using the two-sample t -test and Pearson's χ2 test, as appropriate.RESULTS: A total of 50 perforations were diagnosed out of 80118 colonoscopies, which corresponded to an incidence of 0.06% (95%CI: 0.05-0.08) or a rate of 6.2 per 10000 colonoscopies. All possible risk factors associated with colonic perforation with a P -value < 0.1 were checked for inclusion in a multivariable logbinomial regression model predicting 7-d colonic perforation. The final model resulted in the following risk factors which were significantly associated with risk of colonic perforation: age, gender, body mass index, albumin level, intensive care unit (ICU) patients, inpatient setting, and abdominal pain and Crohn's disease as indications for colonoscopy. CONCLUSION: The cumulative 7 d incidence of colonic perforation in this cohort was 0.06%. Advanced age and female gender were significantly more likely to have perforation. Increasing albumin and BMI resulted in decreased risk of colonic perforation. Having a colonoscopy indication of abdominal pain or Crohn's disease resulted in a higher risk of colonic perforation. Colonoscopies performed in inpatients and particularly the ICU setting had substantially greater odds of perforation. Biopsy and polypectomy did not increase the risk of perforation and only three perforations occurred with screening colonoscopy.
文摘Introduction: Laparoscopic assisted colonoscopic polypectomies have been well described in the literature and are well established in surgical practice, for removal of large, inaccessible, or flat based polyps. Laparoscope allows the endoscopist a serosal viewpoint and thus clear indication of perforation, in addition to enhancing endoscopic positioning through colonic mobilisation, facilitating polypectomy. We describe a previously rarely published technique, in which the colonoscope directs the surgeon to polyps and laparoscopy enables wedge resection of benign polyps using Endo GIA staplers. Using this method, the colonoscope provides an intra-luminal view ensuring adequate excision with margins whilst the laparoscope provides intra-peritoneal access for the wedge resection. Methods: This is a case series of 12 patients with large tubulovillous adenomas, found and biopsied at colonoscopy. Under a general anaesthetic, an on table colonoscopy was performed to identify and reassess the polyp, whilst a laparoscopy was performed to excise the polyp via wedge resection, using the endoscopic view as guidance. Results: The polyp was identified and completely resected in our 12 patients. All patients were discharged on the first post-operative day. Of the polyps excised, a focus of adenocarcinoma was detected in one and an adjacent endocrine tumour was found in another patient in histology along with tubulovillous adenoma. Rest were all tubulovillous adenomas only. Conclusion: We propose that this technique should be regarded as an alternative to Right hemicolectomies and difficult endoscopic mucosal resections for large adenomas, and be regarded as a definitive and safe procedure in its own right.
文摘AIM: To evaluate the full-spectrum endoscopy(FUSE) colonoscopy system as the first report on the utility thereof in a Korean population.METHODS: We explored the efficacy of the FUSE colonoscopy in a retrospective, single-center feasibility study performed between February 1 and July 20, 2015. A total of 262 subjects(age range: 22-80) underwent the FUSE colonoscopy for colorectal cancer screening, polyp surveillance, or diagnostic evaluation. The cecal intubation success rate, the polyp detection rate(PDR), the adenoma detection rate(ADR), and the diverticulum detection rate(DDR), were calculated. Also, the success rates of therapeutic interventions were evaluated with biopsy confirmation.RESULTS: All patients completed the study and the success rates of cecal and terminal ileal intubation were 100% with the FUSE colonoscope; we found 313 polyps in 142 patients and 173 adenomas in 95. The overall PDR, ADR and DDR were 54.2%, 36.3%, and 25.2%, respectively, and were higher in males, and increased with age. The endoscopists and nurses involved considered that the full-spectrum colonoscope improved navigation and orientation within the colon.No colonoscopy was aborted because of colonoscope malfunction.CONCLUSION: The FUSE colonoscopy yielded a higher PDR, ADR, DDR than did traditional colonoscopy, without therapeutic failure or complications, showing feasible, effective, and safe in this first Korean trial.
文摘The moving principle of a colonoscopic robot is presented in this paper. The robot mainly consists of soft mobile mechanism for earthworm locomotion and turning mechanism based on shape memory effect. The soft mobile mechanism contacts colon wall with air in inflatable balloons, so the robot has better soft and non invasive properties. The turning mechanism can be actively bent by shape memory alloy components. It ensures the robot to adapt to the tortuous shape of colon. Therefore, the colonoscopic robot has good safety, lower working strength of surgeon and higher efficiency of colonooscopy.
文摘Colonoscopic evaluation is an important tool in the evaluation of ulcerative colitis(UC).UC is divided by disease extent into proctitis,proctosigmoiditis,left-sided colitis,and pan-colitis.In addition,a cecal or peri-appendiceal patch and backwash ileitis are associated with UC.The extent and behavior of UC has been characterized further using various indices and scoring systems;among these systems is the Mayo Score,which is widely used in current clinical trials for new medications.As these medical therapies for UC have developed,achieving mucosal healing with medications has become an important therapeutic objective.
基金Supported by the National Key Research and Development Program,No.2022YFC2504003Young Scholar Independent Innovation Science Fund of Chinese PLA General Hospital,No.22QNCZ020Medical Science and Technology Young Scholar Fostering Fund,No.21QNPY109.
文摘Colitis-associated colorectal cancer(CAC)is defined as a specific cluster of colorectal cancers that develop as a result of prolonged colitis in patients with inflammatory bowel disease(IBD).Patients with IBD,including ulcerative colitis and Crohn’s disease,are known to have an increased risk of developing CAC.Although the incidence of CAC has significantly decreased over the past few decades,individuals with CAC have increased mortality compared to individuals with sporadic colorectal cancer,and the incidence of CAC increases with duration.Chronic inflammation is generally recognized as a major contributor to the pathogenesis of CAC.CAC has been shown to progress from colitis to dysplasia and finally to carcinoma.Accumulating evidence suggests that multiple immune-mediated pathways,DNA damage pathways,and pathogens are involved in the pathogenesis of CAC.Over the past decade,there has been an increasing effort to develop clinical approaches that could help improve outcomes for CAC patients.Colonoscopic surveillance plays an important role in reducing the risk of advanced and interval cancers.It is generally recommended that CAC patients undergo endoscopic removal or colectomy.This review summarizes the current understanding of CAC,particularly its epidemiology,mechanisms,and management.It focuses on the mechanisms that contribute to the development of CAC,covering advances in genomics,immunology,and the microbiome;presents evidence for management strategies,including endoscopy and colectomy;and discusses new strategies to interfere with the process and development of CAC.These scientific findings will pave the way for the management of CAC in the near future.
文摘BACKGROUND Although the usefulness of endoscopic scores,such as the Mayo Endoscopic Subscore(MES),Ulcerative Colitis Endoscopic Index of Severity(UCEIS),and Ulcerative Colitis Colonoscopic Index of Severity(UCCIS),and biomarkers such as fecal calprotectin(FC)for predicting relapse in ulcerative colitis(UC)has been reported,few studies have included endoscopic scores for evaluating the entire colon.AIM To compare the usefulness of FC value and MES,UCEIS,and UCCIS for predicting relapse in patients with UC in clinical remission.METHODS In total,75 patients with UC in clinical and endoscopic remission who visited our institution between February 2019 and March 2022 were enrolled.The diagnosis of UC was confirmed based on the clinical presentation,endoscopic findings,and histology,according to the current established criteria for UC.Fecal samples were collected the day before or after the colonoscopy for measurement of FC.Endoscopic evaluations were performed using MES,UCEIS,and UCCIS.The primary outcome measure of this study was the assessment of the association between relapse within 12 mo and MES,UCEIS,UCCIS,and FC.The secondary outcome was the comparison between endoscopic scores and biomarkers in en-rolled patients with UC with mucosal healing.RESULTSFC and UCCIS showed a significant correlation with UCEIS (r = 0.537, P < 0.001 and r = 0.957, P < 0.001, respectively).Receiver-operating characteristic analysis for predicting MES 0 showed that the area under the curve ofUCCIS was significantly higher than that of FC (P < 0.01). During the 1-year observation period, 18 (24%) patientsexperienced a relapse, and both the FC and UCCIS of the relapse group were significantly higher than that of theremission group. The cut-off values for predicting relapse were set at FC = 323 mg/kg and UCCIS = 10.2. The areaunder the curve of the receiver-operating characteristic analysis for predicting relapse did not show a significantdifference between FC and UCCIS. The accuracy of the endoscopic scores and biomarkers in predicting relapse was86.7% for UCCIS, 85.3% for UCEIS, 76.0% for FC, and 73.3% for MES.CONCLUSIONThe three endoscopic scores and FC may predict UC relapse during clinical remission. Among these scores, UCEISmay be the most useful in terms of ease of evaluation and accuracy.
