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Wu Y, Li X, Xiong F, Bao WD, Dai YZ, Yue LJ, Liu Y. Malignant obstruction in the ileocecal region treated by self-expandable stent placement under the fluoroscopic guidance: A case report. World J Clin Cases 2022; 10:11529-11535. [PMID: 36387795 PMCID: PMC9649550 DOI: 10.12998/wjcc.v10.i31.11529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 08/26/2022] [Accepted: 09/29/2022] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Malignant tumors of the ileocecal region often cause intestinal obstruction. Emergency surgery is the main treatment for patients presenting with an obstruction. However, this procedure is associated with a high mortality rate and frequent complications. The placement of colon stents is commonly performed for obstructions in the distal colon and is a less invasive and safer procedure. However, obstructions in the proximal colon are more challenging to treat by stent placement due to the increased distance from the anus.
CASE SUMMARY This case report concerns an 88-year-old man with malignant intestinal obstruction in the ileocecal region. He was contraindicated for general anesthesia and surgical enterostomy. The placement of a self-expandable metallic stent seems an alternative to surgery, although stenting in this area is thought to be difficult and few studies have been reported so far. After three attempts at different interventional approaches, a stent was successfully placed in the obstructed segment under fluoroscopic guidance. After the procedure, the patient's abdominal distension and abdominal pain were significantly better than before.
CONCLUSION For patients with proximal colonic obstruction, self-expandable metallic stent placement under fluoroscopic guidance could be considered as a feasible treatment to relieve abdominal distension and pain in patients with acute bowel obstruction. It has the characteristics of high safety and high patient tolerance. However, further study is still needed.
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Affiliation(s)
- Yu Wu
- Department of Interventional Oncology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, Sichuan Province, China
| | - Xi Li
- Department of Interventional Oncology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, Sichuan Province, China
| | - Fei Xiong
- Department of Interventional Oncology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, Sichuan Province, China
| | - Wei-Dong Bao
- Department of Interventional Oncology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, Sichuan Province, China
| | - Yong-Zhou Dai
- Department of Interventional Oncology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, Sichuan Province, China
| | - Lin-Jun Yue
- Department of Interventional Oncology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, Sichuan Province, China
| | - Yuan Liu
- Department of Interventional Oncology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, Sichuan Province, China
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Madiedo A, Hall J. Minimally Invasive Management of Diverticular Disease. Clin Colon Rectal Surg 2021; 34:113-120. [PMID: 33642951 PMCID: PMC7904339 DOI: 10.1055/s-0040-1716703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Traditionally, management of complicated diverticular disease has involved open damage control operations with large definitive resections and colostomies. Studies are now showing that in a subset of patients who would typically have undergone an open Hartmann's procedure for Hinchey III/IV diverticulitis, a laparoscopic approach is equally safe, and has better outcomes. Similar patients may be good candidates for primary anastomosis to avoid the morbidity and subsequent reversal of a colostomy. While most operations for diverticulitis across the country are still performed open, there has been an incremental shift in practice toward minimally invasive approaches in the elective setting. The most recent data from large trials, most notably the SIGMA trial, found laparoscopic sigmoid colectomy is associated with fewer short-term and long-term complications, decreased pain, improvement in length of stay, and maintains better cost-effectiveness than open resections. Some studies even demonstrate that robotic sigmoid resections can maintain a similar if not more reduction in morbidity as the laparoscopic approach while still remaining cost-effective. Intraoperative approaches also factor into improving outcomes. One of the most feared complications in colorectal surgery is anastomotic leak, and many studies have sought to find ways to minimize this risk. Factors to consider to minimize incidence of leak are the creation of tension-free anastomoses, amount of contamination, adequacy of blood supply, and a patient's use of steroids. Techniques supported by data that decrease anastomotic leaks include preoperative oral antibiotic and mechanical bowel prep, intraoperative splenic flexure mobilization, low-tie ligation of the inferior mesenteric artery, and use of indocyanine green immunofluorescence to assess perfusion. In summary, the management of benign diverticular disease is shifting from open, morbid operations for a very common disease to a minimally invasive approach. In this article, we review those approaches shown to have better outcomes, greater patient satisfaction, and fewer complications.
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Affiliation(s)
- Andrea Madiedo
- Department of Surgery, Boston Medical Center, Boston, Massachusetts
| | - Jason Hall
- Department of Surgery, Boston Medical Center, Boston, Massachusetts
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Bennedsgaard SS, Iversen LH. Biopsy sampling during self-expandable metallic stent placement in acute malignant colorectal obstruction: a narrative review. World J Surg Oncol 2021; 19:48. [PMID: 33583419 PMCID: PMC7883457 DOI: 10.1186/s12957-021-02122-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 01/04/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Histopathology is a crucial part of diagnosis and treatment guidance of colorectal cancer. In Denmark, it is not routine to biopsy during self-expandable metallic stent (SEMS) placement as a treatment option for acute colorectal obstruction of unknown etiology. This is due to lack of knowledge about the risks of hemorrhage, and thus the risk to aggravate the deteriorating overview conditions. Therefore, the aim of this study is to investigate whether there is evidence to avoid biopsy sampling during acute SEMS placement. METHODS The PubMed, Embase, and Cochrane Library databases were searched for relevant studies. Studies were included if they described biopsy sampling in relation to SEMS placement. Additionally, national and international guidelines were scrutinized on Google and by visiting the websites of national and international gastrointestinal societies. RESULTS In total, 43 studies were included in the review. Among these, one recommended biopsy during SEMS placement, three advised against biopsy, 23 just reported biopsy was performed during the procedure, and 16 reported biopsy before or after the procedure, or the timing was not specified. Among the 12 included guidelines, only two described biopsy during SEMS placement. CONCLUSION The literature on the subject is limited. In 24 of the 43 included studies, biopsy sampling was done during SEMS placement without reporting a decrease in the technical success rate. The included guidelines were characterized by a general lack of description of whether biopsy during SEMS placement should be performed or not. Prospective studies are needed in order to establish the real risk of hemorrhage, if any, when a biopsy is obtained.
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Sasaki T, Ishibashi R, Yoshida S, Fujisawa T, Shinagawa H, Gon C, Nakai Y, Sasahira N, Saida Y, Isayama H. Comparing the mechanical properties of a self-expandable metallic stent for colorectal obstruction: Proposed measurement method of axial force using a new measurement machine. Dig Endosc 2021; 33:170-178. [PMID: 32196766 DOI: 10.1111/den.13671] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/22/2020] [Accepted: 03/16/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Colorectal stenting is widely performed using self-expandable metallic stents (SEMSs), but the mechanical properties have not been evaluated. Therefore, we conducted an in vitro study to evaluate the mechanical properties of colorectal SEMSs. METHODS Eighteen individual types and sizes of uncovered SEMSs were evaluated for their mechanical properties. Radial force was measured using a measurement machine. Axial force (AF) was measured by two methods: a conventional manual method and a new method using a measurement machine. The correlation of these two methods was evaluated. We also proposed an "AF zero border" that was defined as the angle at which the torque force disappeared. RESULTS Radial force versus diameter curves and AF versus angle curves were influenced by the structure and the size of each stent. There was excellent correlation of AFs measured by the new and conventional manual method (y = 21.434x, R = 0.881, P < 0.0001). Colorectal SEMSs could be categorized into five subgroups according to the mechanical properties. Most hook-wired SEMSs had the AF of zero border. CONCLUSIONS This is the first report to evaluate the mechanical properties of colorectal SEMSs, and these data may provide useful information for the clinical use and development of colorectal SEMS. Furthermore, the new measurement machine might standardize the measuring method of AF.
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Affiliation(s)
- Takashi Sasaki
- Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Rei Ishibashi
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shuntaro Yoshida
- Department of Endoscopy and Endoscopic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Toshio Fujisawa
- Department of Gastroenterology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Hiroki Shinagawa
- Medical Laboratory, Research & Development Center, Zeon Corporation, Toyama, Japan
| | - Chimyon Gon
- Medical Laboratory, Research & Development Center, Zeon Corporation, Toyama, Japan
| | - Yousuke Nakai
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Endoscopy and Endoscopic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Naoki Sasahira
- Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Yoshihisa Saida
- Department of Surgery, Toho University Ohashi Medical Center, Tokyo, Japan
| | - Hiroyuki Isayama
- Department of Gastroenterology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
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Development and In Vitro Evaluation of 5-Fluorouracil-Eluting Stents for the Treatment of Colorectal Cancer and Cancer-Related Obstruction. Pharmaceutics 2020; 13:pharmaceutics13010017. [PMID: 33374233 PMCID: PMC7823773 DOI: 10.3390/pharmaceutics13010017] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/17/2020] [Accepted: 12/19/2020] [Indexed: 02/06/2023] Open
Abstract
Self-expanding metal stents (SEMSs) are currently the gold standard for the localised management of malignant gastrointestinal (GI) stenosis and/or obstructions. Despite encouraging clinical success, in-stent restenosis caused by tumour growth is a significant challenge. Incorporating chemotherapeutic drugs into GI stents is an emerging strategy to provide localised and sustained release of drugs to intestinal malignant tissues to prevent tumour growth. Therefore, the aim of this work was to develop and evaluate a local GI stent-based delivery system that provides a controlled release of 5-fluorouracil (5FU) over a course of several weeks to months, for the treatment of colorectal cancer and cancer-related stenosis/obstructions. The 5FU-loaded GI stents were fabricated via sequential dip-coating of commercial GI stents with a drug-loaded polyurethane (PU) basecoat and a drug-free poly(ethylene-co-vinyl acetate) (PEVA) topcoat. For comparison, two types of commercial stents were investigated, including bare and silicone (Si) membrane-covered stents. The physicochemical properties of the 5FU-loaded stents were evaluated using photoacoustic Fourier-transform infrared (PA-FTIR) spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and thermal analysis. In vitro release studies in biological medium revealed that the 5FU-loaded stents provided a sustained release of drug over the period studied (18 d), and cell viability, cell cycle distribution and apoptosis assays showed that the released 5FU had comparable anticancer activity against human colon cancer cells (HCT-116) to pure 5FU. This study demonstrates that dip-coating is a facile and reliable approach for fabricating drug-eluting stents (DESs) that are promising candidates for the treatment of GI obstructions and/or restenosis.
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Uncovered self-expandable metal stents for the treatment of refractory benign colorectal anastomotic stricture. Sci Rep 2020; 10:19841. [PMID: 33199742 PMCID: PMC7669833 DOI: 10.1038/s41598-020-76779-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 10/28/2020] [Indexed: 11/08/2022] Open
Abstract
Self-expandable metal stent (SEMS) placement has been suggested as a therapeutic modality for treating benign colorectal strictures. Covered stents are generally used, given the concerns regarding the efficacy and safety of uncovered stents. Hence, few studies have evaluated the efficacy and safety of uncovered SEMSs (UCSEMSs) in patients with refractory benign colorectal anastomotic strictures. In this study, 12 patients with postoperative benign symptomatic anastomotic strictures refractory to pneumatic dilation (range, 2–9) and transient indwelling-covered SEMSs were treated using UCSEMS. All enrolled patients were men (mean age, 61 years). Stent placement was successful in all 12 patients, and early clinical success was achieved in 11 (92%) patients. Four patients (25%) showed successful clinical outcomes without further intervention, but eight patients (75%) were clinically unsuccessful, and showed stricture recurrence or functional obstructive symptoms. Three patients underwent surgery, and the remaining five patients required repeat stent procedures. Despite the high reobstruction rate, the median follow-up period after UCSEMS placement was 16.7 months, demonstrating that UCSEMS may be able to achieve medium-term symptom relief without any complications. Therefore, UCSEMS may be an alternative option in exceptional circumstances in carefully selected patients, where invasive surgical treatments, such as stoma diversion, are not an option, thereby improving patients’ quality of life.
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Venezia L, Michielan A, Condino G, Sinagra E, Stasi E, Galeazzi M, Fabbri C, Anderloni A. Feasibility and safety of self-expandable metal stent in nonmalignant disease of the lower gastrointestinal tract. World J Gastrointest Endosc 2020; 12:60-71. [PMID: 32064031 PMCID: PMC6965004 DOI: 10.4253/wjge.v12.i2.60] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 12/08/2019] [Accepted: 12/15/2019] [Indexed: 02/06/2023] Open
Abstract
In recent years, self-expandable metal stents (SEMSs) have been employed to treat benign gastrointestinal strictures secondary to several conditions: Acute diverticulitis, radiation colitis, inflammatory bowel disease (IBD), and postanastomotic leakages and stenosis. Other applications include endometriosis and fistulas of the lower gastrointestinal tract. Although it may be technically feasible to proceed to stenting in the aforementioned benign diseases of the lower gastrointestinal tract, the outcome has been reported to be poor. In fact, in some settings (such as complicated diverticulitis and postsurgical anastomotic strictures), stenting seems to have a limited evidence-based benefit as a bridge to surgery, while in other settings (such as endometriosis, IBD, radiation colitis, etc.), even society guidelines are not able to guide the endoscopist through decisional algorithms for SEMS placement. The aim of this narrative paper is to review the scientific evidence regarding the use of SEMSs in nonmalignant diseases of the lower gastrointestinal tract, both in adult and pediatric settings.
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Affiliation(s)
- Ludovica Venezia
- Gastroenterology Unit, AOU Città della Salute e della Scienza Turin, Turin 10100, Italy
| | - Andrea Michielan
- Gastroenterology and Digestive Endoscopy Unit, Ospedale Santa Chiara, Trento 38122, Italy
| | - Giovanna Condino
- Gastroenterology Unit, Azienda Ospedaliera S.S. Antonio e Biagio e Cesare Arrigo, Alessandria 15121, Italy
| | - Emanuele Sinagra
- Gastroenterology and Endoscopy Unit, Fondazione Istituto Giuseppe Giglio, Contrada Pietra Pollastra Pisciotto, Cefalù 90015, Italy
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo 90100, Italy
| | - Elisa Stasi
- Gastroenterology Unit, Department of Medicine, “Vito Fazzi” Hospital, Lecce 73100, Italy
| | - Marianna Galeazzi
- University of Milano-Bicocca, School of Medicine and Surgery, Monza 20052, Italy
| | - Carlo Fabbri
- Gastroenterology and Digestive Endoscopy Unit, Forlì-Cesena, Azienda U.S.L. Romagna, Ospedale G. Morgagni-L. Pierantoni, Cesena 200868, Italy
| | - Andrea Anderloni
- Digestive Endoscopy Unit, Humanitas Research Hospital, Milan 20100, Italy
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Arafat M, Fouladian P, Blencowe A, Albrecht H, Song Y, Garg S. Drug-eluting non-vascular stents for localised drug targeting in obstructive gastrointestinal cancers. J Control Release 2019; 308:209-231. [DOI: 10.1016/j.jconrel.2019.07.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 07/02/2019] [Accepted: 07/03/2019] [Indexed: 02/08/2023]
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Puértolas S, Navallas D, Herrera A, López E, Millastre J, Ibarz E, Gabarre S, Puértolas J, Gracia L. A methodology for the customized design of colonic stents based on a parametric model. J Mech Behav Biomed Mater 2017; 71:250-261. [DOI: 10.1016/j.jmbbm.2017.03.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 02/24/2017] [Accepted: 03/25/2017] [Indexed: 12/16/2022]
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Won Y, Lee SL, Ku YM, Kim KT, Won HS, An CH. Clinical effect of double coaxial self-expandable metallic stent in management of malignant colon obstruction. Diagn Interv Radiol 2016; 21:167-72. [PMID: 25698096 DOI: 10.5152/dir.2014.14260] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PURPOSE We aimed to evaluate the clinical effectiveness and safety of double coaxial self-expandable metallic stent (DCSEMS) in management of malignant colonic obstruction as a bridge to surgery or palliation for inoperable patients. METHODS Between April 2006 and December 2012, 49 patients (27 males and 22 females; median age, 68 years; age range, 38-91 years) were selected to receive decompressive therapy for malignant colonic obstruction by implanting a DCSEMS. Application of DCSEMS was attempted in 49 patients under fluoroscopic guidance. The obstruction was located in the transverse colon (n=2), descending colon (n=7), sigmoid colon (n=24), rectosigmoid junction (n=6), and the rectum (n=10). The intended use of DCSEMS was as a bridge to elective surgery in 23 patients and palliation in 26 patients. RESULTS Clinical success, defined as >50% dilatation of the stent with subsequent symptomatic improvement, was achieved in 48 of 49 patients (98%). The stent was properly inserted in all patients. No immediate major procedure-related complications occurred. One patient in the bridge-to-surgery group had colon perforation three days after DCSEMS application. Four patients had late migrations of the double stent. CONCLUSION Application of DCSEMS is safe and effective in management of malignant colonic obstruction; it prevents stent migration and tumor ingrowth and lowers perforation rate during the stent application.
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Affiliation(s)
- Yoodong Won
- Department of Radiology, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea,Seoul, Republic of Korea.
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Jessamy K, Ozden N, Simon HM, Kobrossi S, Ubagharaji E. Self-Expanding Metal Stenting in the Management of a Benign Colonic Stricture. Case Rep Gastroenterol 2016; 10:127-31. [PMID: 27403114 PMCID: PMC4929371 DOI: 10.1159/000445185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 03/02/2016] [Indexed: 11/19/2022] Open
Abstract
Colonic postanastomotic strictures occur in 1.5–8% of patients following colorectal surgery. Traditionally, colonic strictures were treated by multiple modalities including endoscopic dilatation. Self-expanding metal stents (SEMS) have been indicated in the management of benign colonic strictures; however, there are limited available data with regard to their efficacy. We present the case of a 68-year-old male who had perforated sigmoid diverticulitis followed by Hartmann's procedure with eventual reanastomosis 6 months later. He subsequently developed benign colonic stricture, which was treated with a metal stent. SEMS are associated with a low mortality rate and are appropriate in treating acute colonic obstruction as a result of benign stricture in the setting of postanastomosis.
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Affiliation(s)
- Kegan Jessamy
- Department of Medicine, SUNY Upstate Medical University, Syracuse, N.Y., USA
| | - Nuri Ozden
- Gastroenterology Division, Department of Medicine, SUNY Upstate Medical University, Syracuse, N.Y., USA
| | - Howard M Simon
- Department of Surgery, SUNY Upstate Medical University, Syracuse, N.Y., USA
| | - Semaan Kobrossi
- Department of Medicine, SUNY Upstate Medical University, Syracuse, N.Y., USA
| | - Ezinnaya Ubagharaji
- Department of Medicine, SUNY Upstate Medical University, Syracuse, N.Y., USA
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Li ZX, Wu XH, Wu HY, Chang WJ, Chang XJ, Yi T, Shi Q, Chen JW, Feng QY, Zhu DX, Wei Y, Zhong YS, Xu JM. Self-expandable metallic stent as a bridge to elective surgery versus emergency surgery for acute malignant colorectal obstruction. Int J Colorectal Dis 2016; 31:561-70. [PMID: 26700099 DOI: 10.1007/s00384-015-2476-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/14/2015] [Indexed: 02/04/2023]
Abstract
BACKGROUD The efficacy and safety of self-expandable metallic stents (SEMSs) as a bridge for patients with acute malignant colorectal obstructions (AMCOs) are still controversial. We conducted this study to evaluate the outcomes of patients with AMCOs treated by different strategies. METHODS From January 2010 to March 2014, a total of 171 patients with AMCOs from Zhongshan Hospital were retrospectively enrolled in this study. One hundred twenty patients successfully received stent placement followed by one-stage laparoscopic or open resection in the stent group, and 51 patients received emergency operations in the emergency group. RESULTS The operation duration and postoperative hospital stay were significantly shorter in the stent group (114.51 ± 28.65 vs. 160.39 ± 58.94 min, P < 0.001; 8.00 ± 3.97 vs. 12.59 ± 9.07 days, P = 0.001). The stent group also had significantly reduced intraoperative blood loss and the incidence of postoperative complications compared with the emergency group (61.00 ± 43.70 vs. 121.18 ± 85.90 ml, P < 0.001; 16.7 vs. 37.3%, P = 0.003). Kaplan-Meier survival curves showed that the median survival time in the stent group was significantly longer than that in the emergency group (53 vs. 41 months, P = 0.034). In subgroup analysis of stent group, the stent laparoscopy group had significantly decreased postoperative complications (P = 0.025), and similar long-term survival (P = 0.81). CONCLUSIONS Stent placement as a bridge to surgery is a safe and feasible procedure and provides significant advantages in terms of short-term outcomes and favorable prognoses for patients with AMCOs. Laparoscopic surgery could be considered as an optimal treatment after stent placement.
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Affiliation(s)
- Zhi-Xiong Li
- Department of Gastrointestinal Surgery, The First Hospital of Putian, Fu Jian, 351100, China
| | - Xiao-Hua Wu
- Department of General Surgery, The First Hospital of Nan Ping, Fu Jian, 353000, China
| | - Hai-yan Wu
- Department of Pathology, The First Hospital of Putian, Fu Jian, 351100, China
| | - Wen-Ju Chang
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Xiu-juan Chang
- Center for Therapeutic Research of Hepatocarcinoma, Beijing 302 Hospital, Beijing, 100000, China
| | - Tuo Yi
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Qiang Shi
- Department of Endoscopic Center, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Jing-Wen Chen
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Qing-Yang Feng
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - De-Xiang Zhu
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Ye Wei
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
| | - Yun-Shi Zhong
- Department of Endoscopic Center, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
| | - Jian-Min Xu
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
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Park CH, Yoon JY, Park SJ, Cheon JH, Kim TI, Lee SK, Lee YC, Kim WH, Hong SP. Clinical efficacy of endoscopic treatment for benign colorectal stricture: balloon dilatation versus stenting. Gut Liver 2015; 9:73-9. [PMID: 25170060 PMCID: PMC4282860 DOI: 10.5009/gnl13326] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND/AIMS There has been a lack of research comparing balloon dilatation and self-expandable metal stent (SEMS) placement to determine which is better for long-term clinical outcomes in patients with benign colorectal strictures. We aimed to compare the clinical efficacy and complication rates of balloon dilatation and SEMS placement for benign colorectal strictures from a variety of causes. METHODS Between January 1999 and January 2012, a total of 43 consecutive patients who underwent endoscopic treatment for benign colorectal stricture (balloon only in 29 patients, SEMS only in seven patients, and both procedures in seven patients) were retrospectively reviewed. RESULTS Thirty-six patients underwent endoscopic balloon dilatation, representing 65 individual sessions, and 14 patients received a total of 17 SEMS placements. The initial clinical success rates were similar in both groups (balloon vs SEMS, 89.1% vs 87.5%). Although the reobstruction rates were similar in both groups (balloon vs SEMS, 54.4% vs. 57.1%), the duration of patency was significantly longer in the balloon dilatation group compared with the SEMS group (65.5±13.3 months vs. 2.0±0.6 months, p=0.031). CONCLUSIONS Endoscopic balloon dilatation is safe and effective as an initial treatment for benign colorectal stricture and as an alternative treatment for recurrent strictures.
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Affiliation(s)
- Chan Hyuk Park
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Jin Young Yoon
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Soo Jung Park
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Hee Cheon
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Tae Il Kim
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Kil Lee
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Yong Chan Lee
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Won Ho Kim
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Sung Pil Hong
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
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Outcomes of the use of fully covered esophageal self-expandable stent in the management of colorectal anastomotic strictures and leaks. DIAGNOSTIC AND THERAPEUTIC ENDOSCOPY 2014; 2014:187541. [PMID: 25587210 PMCID: PMC4281471 DOI: 10.1155/2014/187541] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 11/28/2014] [Accepted: 12/05/2014] [Indexed: 12/13/2022]
Abstract
Introduction. Colorectal anastomotic leak or stricture is a dreaded complication leading to significant morbidity and mortality. The novel use of self-expandable metal stents (SEMS) in the management of postoperative colorectal anastomotic leaks or strictures can avoid surgical reintervention. Methods. Retrospective study with particular attention to the indications, operative or postoperative complications, and clinical outcomes of SEMS placement for patients with either a colorectal anastomotic stricture or leak. Results. Eight patients had SEMS (WallFlex stent) for the management of postoperative colorectal anastomotic leak or stricture. Five had a colorectal anastomotic stricture and 3 had a colorectal anastomotic leak. Complete resolution of the anastomotic stricture or leak was achieved in all patients. Three had recurrence of the anastomotic stricture on 3-month flexible sigmoidoscopy follow-up after the initial stent was removed. Two of these patients had a stricture that was technically too difficult to place another stent. Stent migration was noted in 2 patients, one at day 3 and the other at day 14 after stent placement that required a larger 23 mm stent to be placed. Conclusions. The use of SEMS in the management of colorectal anastomotic leaks or strictures is feasible and is associated with high technical and clinical success rate.
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Köhler G, Antoniou SA, Lechner M, Mayer F, Mair J, Emmanuel K. Stenting for Emergency Colorectal Obstruction: An Analysis of 204 Patients in Relation to Predictors of Failure and Complications. Scand J Surg 2014; 104:146-53. [DOI: 10.1177/1457496914552342] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 07/03/2014] [Indexed: 12/19/2022]
Abstract
Background and Aims: Self-expanding metallic stents are increasingly used in the management of malignant and benign colorectal obstructions. We aimed to identify relevant predictive factors for stent failure and stent-related complications. Material and Methods: We conducted a retrospective single-center analysis of 204 consecutive patients who underwent emergency colorectal stenting procedures because of symptomatic bowel obstructions from 1996 to 2011 at the Sisters of Charity Hospital Linz, Austria. Results: A total of 204 patients (median age 74 years) with 36 (17.7%) benign and 168 (82.3%) malignant obstructions were included in the study. Technical success was achieved in 92.5% and clinical success in 86.8% of the cases. Major complications occurred in 2.9% and minor ones in 19.6%. Overall mortality during a median follow-up period of 4.3 years was 73% (149 patients). Relevant predictors of increased risk of complications were extracolonic obstruction (p = 0.001), complete obstruction (p = 0.066), and inflammatory bowel disease (p = 0.05). Stent localization at the splenic flexure, a stenosis of >8 cm in length, and the need for endoscopic guidance were associated with higher rates of technical and/or clinical stenting failure. Conclusion: Colorectal stenting is less invasive than other means of emergency treatment for large bowel obstruction; it is generally safe and effective in different types of colorectal obstruction. However, relevant rates of failure and complications were recorded and predictors could be determined.
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Affiliation(s)
- G. Köhler
- Department of General and Visceral Surgery, Sisters of Charity Hospital, Linz, Austria
- Academic Teaching Hospital of the Universities Graz and Innsbruck, Linz, Austria
| | - S. A. Antoniou
- Center for Minimally Invasive Surgery, Hospital Neuwerk, Moenchengladbach, Germany
| | - M. Lechner
- Department of Surgery, Paracelsus Medical University, Salzburg, Austria
| | - F. Mayer
- Department of Surgery, Paracelsus Medical University, Salzburg, Austria
| | - J. Mair
- Department of Diagnostic and Interventional Radiology, Sisters of Charity Hospital, Linz, Austria
| | - K. Emmanuel
- Department of General and Visceral Surgery, Sisters of Charity Hospital, Linz, Austria
- Academic Teaching Hospital of the Universities Graz and Innsbruck, Linz, Austria
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Sumise Y, Yoshioka K, Okitsu N, Kamo H, Arakawa Y, Yamaguchi T, Harino Y, Nakai Y, Yamanaka A, Tashiro S. Outcome of emergency one-stage resection and anastomosis procedure for patients with obstructed colorectal cancer. THE JOURNAL OF MEDICAL INVESTIGATION 2014; 60:249-55. [PMID: 24190043 DOI: 10.2152/jmi.60.249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
PURPOSES The purpose of this study was to verify the outcome of the emergency one stage resection and anastomosis procedure for patients with obstructed colorectal cancer. METHODS An emergency one stage resection and anastomosis procedure was performed for 40 patients with obstructive colorectal cancer. The outcome was verified and compared dividing into two groups. 17 patients under the age of 70 in (Group A), 23 patients 70 years and over in (Group B). RESULTS The operative mortality rate in both groups was 0%. As a result, postoperative complications were not significantly different between the two groups. The overall survival rate after a 5-year period in both groups was 41.8%, regarding all patients and the survival curves for the two groups, was not significantly different. The 5 year survival rate in stage II or III showed no differences between the two groups. CONCLUSION The one-stage resection and anastomosis of the large bowel could be applied safely to emergency patients, which in turn allows for excellent short-term operative results in both groups mentioned. This particular procedure should be positively enforced, even in elderly patients in their 70's.
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Uncovered Self-Expanding Metal Stent (SEMS) Four Years After Placement for Long-Term Treatment of a Benign Colonic Obstruction. ACG Case Rep J 2014; 1:206-8. [PMID: 26157878 PMCID: PMC4435329 DOI: 10.14309/crj.2014.54] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 03/21/2014] [Indexed: 12/29/2022] Open
Abstract
Self-expanding metal stents (SEMS) have emerged as an alternative to surgery in the treatment of malignant colorectal obstructions. There is limited data about their use for benign colonic obstructions, especially in regards to safety and long-term patency. We present a case in which long-term SEMS placement proved to be a durable option for over 4 years in a patient with a benign colonic stricture.
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18
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Jovani M, Genco C, Bravatà I, Repici A. Stents in the management of benign colorectal strictures. TECHNIQUES IN GASTROINTESTINAL ENDOSCOPY 2014. [DOI: 10.1016/j.tgie.2014.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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van Halsema EE, van Hooft JE, Small AJ, Baron TH, García-Cano J, Cheon JH, Lee MS, Kwon SH, Mucci-Hennekinne S, Fockens P, Dijkgraaf MGW, Repici A. Perforation in colorectal stenting: a meta-analysis and a search for risk factors. Gastrointest Endosc 2014; 79:970-82.e7; quiz 983.e2, 983.e5. [PMID: 24650852 DOI: 10.1016/j.gie.2013.11.038] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Accepted: 11/25/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND Recent studies suggest that there is a substantial risk of perforation after colorectal stent placement. OBJECTIVE To identify risk factors for perforation from colonic stenting. DESIGN A meta-analysis of 86 studies published between 2005 and 2011. SETTING Multicenter review. PATIENTS All patients who underwent colorectal stent placement. INTERVENTION Colorectal stent placement. MAIN OUTCOME MEASUREMENTS The occurrence of perforation with subgroup analyses for stent design, stricture etiology, stricture dilation, and concomitant chemotherapy, including the use of bevacizumab. RESULTS A total of 4086 patients underwent colorectal stent placement; perforation occurred in 207. Meta-analysis revealed an overall perforation rate of 7.4%. Of the 9 most frequently used stent types, the WallFlex, the Comvi, and the Niti-S D-type had a higher perforation rate (>10%). A lower perforation rate (<5%) was found for the Hanarostent and the Niti-S covered stent. Stenting benign strictures was associated with a significantly increased perforation rate of 18.4% compared with 7.5% for malignant strictures. Dilation did not increase the risk of perforation: 8.5% versus 8.5% without dilation. The subgroup of post-stent placement dilation had a significantly increased perforation risk of 20.4%. With a perforation rate of 12.5%, bevacizumab-based therapy was identified as a risk factor for perforation, whereas the risk for chemotherapy without bevacizumab was 7.0% and not increased compared with the group without concomitant therapies during stent therapy (9.0%). LIMITATIONS Heterogeneity; a considerable proportion of data is unavailable for subgroup analysis. CONCLUSIONS The perforation rate of colonic stenting is 7.4%. Stent design, benign etiology, and bevacizumab were identified as risk factors for perforation. Intraprocedural stricture dilation and concomitant chemotherapy were not associated with an increased risk of perforation.
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Affiliation(s)
- Emo E van Halsema
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, the Netherlands
| | - Jeanin E van Hooft
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, the Netherlands
| | - Aaron J Small
- Division of Gastroenterology, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Todd H Baron
- Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA
| | - Jesús García-Cano
- Department of Gastroenterology, Hospital Virgen de la Luz, Cuenca, Spain
| | - Jae Hee Cheon
- Department of Internal Medicine, Yonsei Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Moon Sung Lee
- Department of Internal Medicine, Soon Chun Hyang University Bucheon Hospital, Bucheon, Korea
| | - Se Hwan Kwon
- Department of Radiology, Kyung Hee University Medical Center, Seoul, Korea
| | | | - Paul Fockens
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, the Netherlands
| | | | - Alessandro Repici
- Department of Digestive Endoscopy, Istituto Clinico Humanitas, Milan, Italy
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Abstract
Acute obstruction of the gastrointestinal or biliary tract represents a common problem for acute care surgeons. It is with appropriate clinical evaluation, planning, and physical examination follow-up that acute care surgeons are able to appropriately diagnose, manage, and resolve this difficult group of surgical problems and minimize the morbidity associated with each.
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Affiliation(s)
- Jason Sperry
- University of Pittsburgh Medical Center, Suite F1268 PUH, 200 Lothrop Street, Pittsburgh, PA 15213, USA
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21
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García-Cano J. Colorectal stenting as first-line treatment in acute colonic obstruction. World J Gastrointest Endosc 2013; 5:495-501. [PMID: 24147193 PMCID: PMC3797902 DOI: 10.4253/wjge.v5.i10.495] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Revised: 06/16/2013] [Accepted: 08/13/2013] [Indexed: 02/05/2023] Open
Abstract
Tumoral obstructions in almost the entire gastrointestinal tract can be resolved with interventional digestive endoscopy techniques. Self-expanding metal stent (SEMS) insertion in the obstructed colon is a minimally invasive and relatively simple procedure providing an effective first-line treatment for relief of acute malignant obstruction symptoms and serving either as a preoperative or “bridge to surgery” procedure or as palliative definitive care. This technique was introduced in the early 1990s. Although there is still debate about its real value, a lot of reports have been published since then and the procedure is advocated by many surgical groups as the method of choice for the initial treatment of left-sided tumoral colonic obstruction. Before the procedure, colonic obstruction has to be diagnosed by abdominal radiographs, water contrast enema and/or a computed tomography scan. The greatest information is provided by the latter and it is perhaps the method of choice prior to stenting. Skills and training are mandatory, as in all interventional procedures. The key step for success is to cross the malignant stricture with a guidewire. Care must be taken not to over insufflate an obstructed colon during the procedure. SEMS slide over the guidewire through the endoscope working channel or in parallel, outside the endoscope. An average 7% perforation rate has been reported during the procedure and other minor complications can appear in the follow up. However, as a whole, this technique seems to compare favorably with surgery.
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Zhou JM, Yao LQ, Xu JM, Xu MD, Zhou PH, Chen WF, Shi Q, Ren Z, Chen T, Zhong YS. Self-expandable metallic stent placement plus laparoscopy for acute malignant colorectal obstruction. World J Gastroenterol 2013; 19:5513-5519. [PMID: 24023495 PMCID: PMC3761105 DOI: 10.3748/wjg.v19.i33.5513] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 06/17/2013] [Accepted: 07/19/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the clinical advantages of the stent-laparoscopy approach to treat colorectal cancer (CRC) patients with acute colorectal obstruction (ACO).
METHODS: From April 2008 to April 2012, surgery-related parameters, complications, overall survival (OS), and disease-free survival (DFS) of 74 consecutive patients with left-sided CRC presented with ACO who underwent self-expandable metallic stent (SEMS) placement followed by one-stage open (n = 58) or laparoscopic resection (n = 16) were evaluated retrospectively. The stent-laparoscopy group was also compared with a control group of 96 CRC patients who underwent regular laparoscopy without ACO between January 2010 and December 2011 to explore whether SEMS placement influenced the laparoscopic procedure or reduced long-term survival by influencing CRC oncological characteristics.
RESULTS: The characteristics of patients among these groups were comparable. The rate of conversion to open surgery was 12.5% in the stent-laparoscopy group. Bowel function recovery and postoperative hospital stay were significantly shorter (3.3 ± 0.9 d vs 4.2 ± 1.5 d and 6.7 ± 1.1 d vs 9.5 ± 6.7 d, P = 0.016 and P = 0.005), and surgical time was significantly longer (152.1 ± 44.4 min vs 127.4 ± 38.4 min, P = 0.045) in the stent-laparoscopy group than in the stent-open group. Surgery-related complications and the rate of admission to the intensive care unit were lower in the stent-laparoscopy group. There were no significant differences in the interval between stenting and surgery, intraoperative blood loss, OS, and DFS between the two stent groups. Compared with those in the stent-laparoscopy group, all surgery-related parameters, complications, OS, and DFS in the control group were comparable.
CONCLUSION: The stent-laparoscopy approach is a feasible, rapid, and minimally invasive option for patients with ACO caused by left-sided CRC and can achieve a favorable long-term prognosis.
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Loffeld RJLF, Dekkers PEP. Palliative stenting of the digestive tract: a case series of a single centre. J Gastrointest Oncol 2013; 4:14-9. [PMID: 23450097 DOI: 10.3978/j.issn.2078-6891.2012.045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Accepted: 08/25/2012] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND AND AIM Obstruction of the gastrointestinal tract due to cancer can be treated with stenting. The aim was to review the local experience with endoscopic stenting. All patients treated with stenting in a ten years period from 2001-2010 were studied. RESULTS Fifty one patients received 57 stents because of oesophageal cancer. Mean survival after stent placement was 141 days. No case of perforation occurred. In nine cases (17%) clogging with food occurred. Tumour overgrowth was noted in four cases. Twenty four patients received 28 stents in their colon or rectum. The stents were placed in the rectum (n=6), the sigmoid (n=14), the descending colon (n=1), and the transverse colon (n=3). Mean survival was 276 days. Perforation did not occur. Tumour ingrowth was seen in two patients. One patient received a second stent. Dislocation occurred in two cases. There were two cases of clogging (8%) by stool. Fourteen patients received a total of 18 stents because of obstructing stomach cancer. Mean survival after placement was 121 days. There was no perforation, one case of clogging, and four cases of tumour ingrowth. Eight patients had stent placement in their duodenum. Mean survival after stent placement was 84 days. No perforation or clogging occurred. But three cases of tumour ingrowth were seen. CONCLUSIONS The present series shows that placement of expandable stents in the digestive tract in normal daily practice is feasible, safe, with a low number of complications, and provides good palliation for their remaining life.
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Affiliation(s)
- Ruud J L F Loffeld
- Department of Internal Medicine and Gastroenterology, Zaans Medical Centre Zaandam, The Netherlands
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Romero RV, Mahadeva S. Factors influencing quality of bowel preparation for colonoscopy. World J Gastrointest Endosc 2013; 5:39-46. [PMID: 23424015 PMCID: PMC3574611 DOI: 10.4253/wjge.v5.i2.39] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 10/08/2012] [Accepted: 12/01/2012] [Indexed: 02/05/2023] Open
Abstract
Recent technological advances in colonoscopy have led to improvements in both image enhancement and procedural performance. However, the utility of these technological advancements remain dependent on the quality of bowel preparation during colonoscopy. Poor bowel preparation has been shown to be associated with lower quality indicators of colonoscopy performance, such as reduced cecal intubation rates, increased patient discomfort and lower adenoma detection. The most popular bowel preparation regimes currently used are based on either Polyethylene glycol-electrolyte, a non-absorbable solution, or aqueous sodium phosphate, a low-volume hyperosmotic solution. Statements from various international societies and several reviews have suggested that the efficacy of bowel preparation regimes based on both purgatives are similar, although patients’ compliance with these regimes may differ somewhat. Many studies have now shown that factors other than the type of bowel preparation regime used, can influence the quality of bowel preparation among adult patients undergoing colonoscopy. These factors can be broadly categorized as either patient-related or procedure-related. Studies from both Asia and the West have identified patient-related factors such as an increased age, male gender, presence of co-morbidity and socio-economic status of patients to be associated with poor bowel preparation among adults undergoing routine out-patient colonoscopy. Additionally, procedure-related factors such as adherence to bowel preparation instructions, timing of bowel purgative administration and appointment waiting times for colonoscopy are recognized to influence the quality of colon cleansing. Knowledge of these factors should aid clinicians in modifying bowel preparation regimes accordingly, such that the quality of colonoscopy performance and delivery of service to patients can be optimised.
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Affiliation(s)
- Ronald V Romero
- Ronald V Romero, Division of Gastroenterology, Department of Medicine, University Malaya Medical Centre, Kuala Lumpur 50603, Malaysia
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25
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Abstract
Approximately 20-25% of patients with colorectal cancer present with liver metastases at the time of diagnosis. Traditionally, resection of the primary tumor has been advocated in order to prevent complications of the primary tumor colorectal cancer in patients with synchronous liver metastases. The published data concerning long-term prognosis in this group of patients are discordant. Although some of the reports show survival benefits from resection of the primary tumor, these studies are retrospective with small number of patients and using single drug chemotherapy. For patients with resectable liver metastases, new studies indicate that progression-free survival is best in patients receiving perioperative chemotherapy. In patients with synchronous nonresectable liver metastases and colorectal cancer, there is no published prospective randomized study comparing initial surgery of the primary tumor with neoadjuvant chemotherapy. However, recent publications show that in patients receiving chemotherapy based on oxaliplatin or irinotecan combined with targeted treatments, the complications associated with the primary tumor are less than 10%. The conclusion should be that today prophylactic surgery of asymptomatic primary colorectal cancer in patients with liver metastases cannot be recommended.
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Affiliation(s)
- Bengt Gustavsson
- Department of Surgery, University of Gothenburg, Sahlgrenska University Hospital/Östra Institute of Clinical Sciences, Göteborg, Sweden.
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