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Safety of early surgery after self-expandable metallic stenting for obstructive left-sided colorectal cancer. Surg Endosc 2023; 37:3873-3883. [PMID: 36717427 DOI: 10.1007/s00464-023-09891-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 01/15/2023] [Indexed: 02/01/2023]
Abstract
BACKGROUND Self-expanding metallic stenting (SEMS) is usual for the temporary resolution of obstructive left-sided colorectal cancer (CRC) as a bridge to elective surgery. However, there is no consensus regarding adequate time intervals from stenting to radical surgery. The aim of this study was to identify the optimal time interval that results in favorable short- and long-term outcomes. METHODS Data on patients with obstructive left-sided CRC who underwent elective radical surgery after clinically successful SEMS deployment in five tertiary referral hospitals from 2004 to 2016 were analyzed, retrospectively. An inverse probability treatment-weighted propensity score analysis was used to minimize bias. Postoperative short- and long-term outcomes were compared between two groups: an early surgery (within 8 days) group and delayed surgery (after 8 days) group. RESULTS Of 311 patients, 148 (47.6%) underwent early and 163 (52.4%) underwent delayed surgery. The median surgery interval was 9.0 days. After adjustment, the groups had similar patient and tumor characteristics. In terms of short-term outcomes, there was no difference in hospitalization length or postoperative complications. No deaths were observed. With a median follow-up of 71.0 months, no significant difference was observed between the groups in 5-year overall survival (early vs. delayed surgery: 79.6% vs. 71.3%, P = 0.370) and 5-year disease-free survival (early vs. delayed surgery: 59.1% vs. 60.4%, P = 0.970). CONCLUSIONS In obstructive left-sided CRC, the time interval between SEMS and radical surgery did not significantly influence short- and long-term outcomes. Therefore, early surgery after SEMS could be suggested if there is no reason to postpone surgery for preoperative medical optimization.
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Matsuda A, Yamada T, Takahashi G, Matsumoto S, Yokoyama Y, Sonoda H, Ohta R, Shinji S, Sekiguchi K, Kuriyama S, Kanaka S, Yoshida H. Postoperative infectious complications have a negative oncological impact in patients after stent placement with malignant large bowel obstruction. Int J Colorectal Dis 2023; 38:2. [PMID: 36602578 DOI: 10.1007/s00384-022-04290-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/28/2022] [Indexed: 01/06/2023]
Abstract
PURPOSE In this study, we aimed to investigate the oncological impact of postoperative infection in patients with malignant large bowel obstruction managed by self-expandable metallic stent placement as a bridge to surgery. METHODS The cohort of this multicenter retrospective study comprised 129 patients with pathological stage II/III malignant large bowel obstruction who had undergone bridge to surgery. Patients were allocated to no-postoperative infection (n = 116) and postoperative infection groups (n = 13). RESULTS The postoperative infection group had a significantly greater proportion of men, fewer harvested lymph nodes, and longer postoperative hospital stays than did the no-postoperative infection group. Self-expandable metallic stent-related variables, including clinical failure, were not associated with postoperative infection. Male sex and low body mass index were identified as risk factors for postoperative infection by multivariate logistic regression. Three-year relapse-free survival rates were 75.5% and 30.8% in the no-postoperative infection and postoperative infection groups, respectively; this difference is statistically significant. Male sex, postoperative infection, and T4 were identified as independent prognostic factors by multivariate Cox proportional hazard analysis. The postoperative infection group had a significantly higher total recurrence rate and shorter interval to recurrence than did the no-postoperative infection group. CONCLUSION To the best of our knowledge, this is the first study to show that postoperative infection in bridge to surgery patients has a negative oncological impact. This finding indicates that further improvement in perioperative management of bridge to surgery patients is required to minimize postoperative infection and that patient-risk stratification and additional therapy would contribute to improving oncological outcomes.
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Affiliation(s)
- Akihisa Matsuda
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8603, Japan.
| | - Takeshi Yamada
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8603, Japan
| | - Goro Takahashi
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8603, Japan
| | - Satoshi Matsumoto
- Department of Surgery, Nippon Medical School Chiba Hokusoh Hospital, 1715 Kamagari, Inzai, Chiba, 270-1694, Japan
| | - Yasuyuki Yokoyama
- Department of Digestive Surgery, Nippon Medical School Musashi Kosugi Hospital, 1-396 Kosugi-cho, Nakahara-ku, Kanagawa, 211-8533, Kawasaki, Japan
| | - Hiromichi Sonoda
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8603, Japan
| | - Ryo Ohta
- Department of Digestive Surgery, Nippon Medical School Musashi Kosugi Hospital, 1-396 Kosugi-cho, Nakahara-ku, Kanagawa, 211-8533, Kawasaki, Japan
| | - Seiichi Shinji
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8603, Japan
| | - Kumiko Sekiguchi
- Department of Surgery, Nippon Medical School Tama Nagayama Hospital, Tokyo, Tama, 206-8512, Japan
| | - Sho Kuriyama
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8603, Japan
| | - Shintaro Kanaka
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8603, Japan
| | - Hiroshi Yoshida
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8603, Japan
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Controversies of colonic stenting in obstructive left colorectal cancer: a critical analysis with meta-analysis and meta-regression. Int J Colorectal Dis 2021; 36:689-700. [PMID: 33495871 DOI: 10.1007/s00384-021-03834-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/05/2021] [Indexed: 02/06/2023]
Abstract
PURPOSE After almost three decades since the first description of colonic stents, the controversies of its safe application continue to impede the readiness of adoption by clinicians for malignant left bowel obstruction. This review seeks to address some of the controversial aspects of stenting and its impact on surgical and oncological outcomes. METHODS Medline, Embase, and CNKI were searched for articles employing SEMS for left colonic obstruction. Outcomes analyzed include success rates, complications, and long-term survival. Pooled risk ratio (RR) and 95% confidence interval (CI) were estimated. RESULTS 36 studies were included with 2002 patients across seven randomized controlled trials and 29 observational studies. High technical (92%) and clinical (82%) success rates, and low rates of complications, including perforation (5%), were found. Those with > 8% perforation rates had poorer technical success rates than those with ≤ 8%, but there were no significant differences in 90-day in-hospital mortality and three and 5-year overall and disease-free survival. A significant increase was found in technical (RR = 1.094; CI, 1.041-1.149; p < 0.001) and clinical (RR = 1.158; CI, 1.064-1.259; p = 0.001) success rates when the duration between stenting and surgery was ≥ 2 weeks compared to < 2 weeks, but there were no significant differences in perforation rates, 90-day in-hospital mortality, and long-term survival. CONCLUSIONS Colonic stenting is safe and effective with high success rates and low complication rates. However, outcomes of higher perforation rates and optimal timing from stent till surgery remain unclear, with only a few studies reporting on these outcomes, leaving areas for future research.
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Stenting as a bridge to surgery for extra-colonic malignancy induced colorectal obstruction: preliminary experience. BMC Gastroenterol 2020; 20:117. [PMID: 32306900 PMCID: PMC7168826 DOI: 10.1186/s12876-020-01273-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 04/08/2020] [Indexed: 01/08/2023] Open
Abstract
Background The majority of colonic obstructions result from colorectal cancer. However, malignancies of extra-colonic origin can also disrupt colorectal patency, and the efficacy of self-expanding metal stents (SEMS) insertion as a bridge to surgery in these patients are still in debate. The aim of this study is to evaluate the efficacy of endoscopic stenting as a bridge to surgery (BTS) for extra-colonic malignancy (ECM)-induced colonic obstruction. Methods Thirty-three patients with colonic obstruction due to ECM who received self-expanding metal stents (SEMS) insertion at a single academic tertiary medical center between 2004 and 2015 were included. The purpose of SEMS insertion was determined based on whether the patient’s medical records indicated any surgical plans before SEMS insertion. Technical success was defined as a patent SEMS covering the entire length of the obstruction. Bridging success was defined as elective surgical procedures after the first SEMS insertion. Results Among the 33 patients who underwent SEMS insertion for colorectal obstruction due to ECM, nine underwent SEMS as a BTS. Technical success was achieved in 100% (9/9). Seven patients underwent elective surgery after successful decompression with the first SEMS, and the bridging success rate was 77.8% (7/9). Two patients needed secondary stent insertion before elective surgery. However, none of them required emergent surgery. No major complications occurred, including death related to colorectal endoscopic procedures, perforation, or bleeding. Conclusion SEMS insertion as a BTS is a good treatment option to avoid emergent surgery in patients with colonic obstruction caused by extra-colonic malignancy.
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Optimal Interval From Placement of a Self-expandable Metallic Stent to Surgery in Patients With Malignant Large Bowel Obstruction: A Preliminary Study. Surg Laparosc Endosc Percutan Tech 2018; 28:239-244. [DOI: 10.1097/sle.0000000000000548] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Tomita M, Saito S, Makimoto S, Yoshida S, Isayama H, Yamada T, Matsuzawa T, Enomoto T, Kyo R, Kuwai T, Hirata N, Shimada M, Hirakawa T, Koizumi K, Saida Y. Self-expandable metallic stenting as a bridge to surgery for malignant colorectal obstruction: pooled analysis of 426 patients from two prospective multicenter series. Surg Endosc 2018; 33:499-509. [PMID: 30006840 PMCID: PMC6342866 DOI: 10.1007/s00464-018-6324-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 07/06/2018] [Indexed: 12/15/2022]
Abstract
Background Self-expandable metallic stenting (SEMS) for malignant colorectal obstruction (MCO) as a bridge to elective surgery (BTS) is a widely used procedure. The aim of this study was to assess short-term outcomes of SEMS for MCO as BTS. Methods This study analyzed pooled data from BTS patients who were enrolled in two multicenter prospective single-arm observational clinical studies that used different stent types. Both studies were conducted by the Japan Colonic Stent Safe Procedure Research Group (JCSSPRG). The first study evaluated the WallFlex™ colonic stent for BTS or palliative treatment (PAL) from May 2012 to October 2013 and the second evaluated the Niti-S™ colonic stent from October 2013 to May 2014. Fifty-three facilities in Japan participated in the studies. Before each study started, the procedure had been shared with the participating institutions by posting details of the standard methods of SEMS placement on the JCSSPRG website. Patients were followed until discharged after surgery. Results A total of 723 consecutive patients were enrolled in the two studies. After excluding nine patients, the remaining 714 patients were evaluated as a per-protocol cohort. SEMS placement was performed in 426 patients (312 WallFlex and 114 Niti-S) as BTS and in 288 as PAL. In the 426 BTS patients, the technical success rate was 98.1% (418/426). The clinical success rate was 93.8% (392/418). SEMS-related preoperative complications occurred in 8.5% of patients (36/426), perforations in 1.9% (8/426), and stent migration in 1.2% (5/426). Primary anastomosis was possible in 91.8% of patients (391/426), 3.8% of whom (15/393) had anastomosis leakage. The overall stoma creation rate was 10.6% (45/426). The postoperative complication rate was 16.9% (72/426) and mortality rate was 0.5% (2/426). Conclusions SEMS placement for MCO as BTS is safe and effective with respect to peri-procedural outcomes. Further investigations are needed to confirm long-term oncological outcomes. Electronic supplementary material The online version of this article (10.1007/s00464-018-6324-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Masafumi Tomita
- Department of Surgery, Kishiwada Tokushukai Hospital, 4-27-1 Kamori-cho, Kishiwada-shi, Osaka, 596-8522, Japan.
| | - Shuji Saito
- Division of Surgery, Gastrointestinal Center, Yokohama Shin-Midori General Hospital, Yokohama, Japan
| | - Shinichiro Makimoto
- Department of Surgery, Kishiwada Tokushukai Hospital, 4-27-1 Kamori-cho, Kishiwada-shi, Osaka, 596-8522, Japan
| | - Shuntaro Yoshida
- Department of Endoscopy and Endoscopic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Isayama
- Department of Gastroenterology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Tomonori Yamada
- Department of Gastroenterology, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Japan
| | - Takeaki Matsuzawa
- Department of Digestive and General Surgery, Uonuma Institute of Community Medicine, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Toshiyuki Enomoto
- Department of Surgery, Toho University Ohashi Medical Center, Tokyo, Japan
| | - Rika Kyo
- Department of Gastroenterology, Saiseikai Yokohamashi-Nanbu Hospital, Yokohama, Japan
| | - Toshio Kuwai
- Department of Gastroenterology, National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Kure, Japan
| | - Nobuto Hirata
- Department of Gastroenterology, Kameda Medical Center, Kamogawa, Chiba, Japan
| | - Mamoru Shimada
- Department of Surgery, Toyonaka Midorigaoka Hospital, Osaka, Japan
| | - Tomio Hirakawa
- Department of Gastroenterology, Toyonaka Midorigaoka Hospital, Osaka, Japan
| | - Koichi Koizumi
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, Tokyo, Japan
| | - Yoshihisa Saida
- Department of Surgery, Toho University Ohashi Medical Center, Tokyo, Japan
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T4 Colon Cancer - Current Management. CURRENT HEALTH SCIENCES JOURNAL 2018; 44:5-13. [PMID: 30622748 PMCID: PMC6295185 DOI: 10.12865/chsj.44.01.01] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 01/05/2018] [Indexed: 12/11/2022]
Abstract
Colorectal cancer is the third most often encountered type of cancer and represents the third leading cause of cancer related deaths, on both sexes. One of the most important prognostic parameters is the tumor’s stage at the time of the diagnosis. T4 cancers represent advanced tumors associated with penetration of the visceral peritoneum (T4a) and/or direct invasion in adjacent structures (T4b). Preoperative diagnosis is influenced by the inability of the existent imaging modalities to accurately differentiate the true invasion from the simple, inflammatory adherence to the neighboring structures. As a consequence surgical treatment must follow the principle of en bloc resection; however the ability of achieving an R0 resection depends on the tumor location, invaded organ, and the type of the surgical procedure required. Neoadjuvant treatment for advanced colon cancer it may be very difficult to be applied. This review is focused on preoperative workup, therapeutic strategies and subsequent results in advanced T4 colon cancers.
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Lim TZ, Chan DKH, Tan KK. Endoscopic Stenting Does Not Worsen Long Term Outcomes Amongst Patients Presenting with Obstruction from Colorectal Cancers. Ann Surg Oncol 2017; 24:1618-1625. [DOI: 10.1245/s10434-016-5724-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
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Min CK, Kim HO, Lee D, Jung KU, Lee SR, Kim H, Chun HK. Obstructive Left Colon Cancer Should Be Managed by Using a Subtotal Colectomy Instead of Colonic Stenting. Ann Coloproctol 2016; 32:215-220. [PMID: 28119864 PMCID: PMC5256247 DOI: 10.3393/ac.2016.32.6.215] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 10/24/2016] [Indexed: 01/01/2023] Open
Abstract
PURPOSE This study compared a subtotal colectomy to self-expandable metallic stent (SEMS) insertion as a bridge to surgery for patients with left colon-cancer obstruction. METHODS Ninety-four consecutive patients with left colon-cancer obstruction underwent an emergency subtotal colectomy or elective SEMS insertion between January 2007 and August 2014. Using prospectively collected data, we performed a retrospective comparative analysis on an intention-to-treat basis. RESULTS A subtotal colectomy and SEMS insertion were attempted in 24 and 70 patients, respectively. SEMS insertion technically failed in 5 patients (7.1%). The mean age and rate of obstruction in the descending colon were higher in the subtotal colectomy group than the SEMS group. Sex, underlying disease, American Society of Anesthesiologists physical status, and pathological stage showed no statistical difference. Laparoscopic surgery was performed more frequently in patients in the SEMS group (62 of 70, 88.6%) than in patients in the subtotal colectomy group (4 of 24, 16.7%). The overall rate of postoperative morbidity was higher in the SEMS group. No Clavien-Dindo grade III or IV complications occurred in the subtotal colectomy group, but 2 patients (2.9%) died from septic complications in the SEMS group. One patient (4.2%) in the subtotal colectomy group had synchronous cancer. The total hospital stay was shorter in the subtotal colectomy group. The median number of bowel movements in the subtotal colectomy group was twice per day at postoperative 3-6 months. CONCLUSION A subtotal colectomy for patients with obstructive left-colon cancer is a clinically and oncologically safer, 1-stage, surgical strategy compared to SEMS insertion as a bridge to surgery.
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Affiliation(s)
- Chung Ki Min
- Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hyung Ook Kim
- Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Donghyoun Lee
- Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Kyung Uk Jung
- Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sung Ryol Lee
- Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hungdai Kim
- Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ho-Kyung Chun
- Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
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Saeed KM, Zafar W, Masood MA, Khattak S, Syed AA, Yusuf MA. Self-Expanding Metallic Stents (SEMS) in Left-Sided Colonic Cancer--a Cancer Center Experience. J Gastrointest Cancer 2016; 47:69-74. [PMID: 26691172 DOI: 10.1007/s12029-015-9789-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND STUDY AIMS Self-Expanding Metallic Stents (SEMS) are a surgery-sparing option for malignant colonic obstruction. They can be inserted as a "bridge to surgery" (BTS) for potentially curable disease, or as a palliative measure, thereby avoiding the higher morbidity and mortality associated with surgery. The objective of this study was to report our local experience of left-sided colonic stents. METHODS Data on 49 patients was collected retrospectively from Oct 2008 to Nov 2014 at our cancer centre. This included demographics, baseline clinical characteristics, indications for SEMS placement (bridge to surgery/palliative), technical and clinical success, complications, and the mean patency of duration. Survival in both groups was also plotted on a Kaplan-Meier chart. RESULTS A total of 49 patients with colorectal carcinoma (CRC) of the left side were enrolled. The mean age was 50 years (range 18-86). Ninety percent of patients had disease involving the rectum, sigmoid colon, or both. Forty-seven percent (n = 23) of patients had stent insertion as a BTS, whereas 53% (n = 26) had the procedure with palliative intent. Technical and clinical success rates were 96 and 88%, respectively. The clinical success rate of the palliative arm was lower than that of the BTS arm (p = 0.024). 87.5% (n = 42) had no procedure-related complications. Technical failure, perforation, and stent migration/expulsion, were each observed in 4% of cases. Mean stent patency duration was 83.9 days. CONCLUSION SEMS insertion for left-sided malignant colonic obstruction is a safe and effective procedure when used either as a bridge to surgery or with palliative intent.
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Affiliation(s)
- Kamran Muddasar Saeed
- Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab, Pakistan.
| | - Waleed Zafar
- Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab, Pakistan
| | - Muhammad Adnan Masood
- Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab, Pakistan
| | - Shahid Khattak
- Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab, Pakistan
| | - Aamir Ali Syed
- Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab, Pakistan
| | - Muhammed Aasim Yusuf
- Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab, Pakistan
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Kim EJ, Kim YJ. Stents for colorectal obstruction: Past, present, and future. World J Gastroenterol 2016; 22:842-852. [PMID: 26811630 PMCID: PMC4716082 DOI: 10.3748/wjg.v22.i2.842] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 10/22/2015] [Accepted: 11/19/2015] [Indexed: 02/06/2023] Open
Abstract
Since the development of uncovered self-expanding metal stents (SEMS) in the 1990s, endoscopic stents have evolved dramatically. Application of new materials and new designs has expanded the indications for enteral SEMS. At present, enteral stents are considered the first-line modality for palliative care, and numerous types of enteral stents are under development for extended clinical usage, beyond a merely palliative purpose. Herein, we will discuss the current status and the future development of lower enteral stents.
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Bayraktar B, Ozemir IA, Kefeli U, Demiral G, Sagiroğlu J, Bayraktar O, Adali G, Ozcelik A, Tortum OB. Colorectal stenting for palliation and as a bridge to surgery: A 5-year follow-up study. World J Gastroenterol 2015; 21:9373-9379. [PMID: 26309363 PMCID: PMC4541389 DOI: 10.3748/wjg.v21.i31.9373] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 04/15/2015] [Accepted: 06/10/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the long-term effectiveness of colonic stents in colorectal tumors causing large bowel obstruction.
METHODS: We retrospectively analyzed data from 49 patients with colorectal cancer who had undergone colorectal stent placement between January 2008 and January 2013. Patients’ symptoms, characteristics and clinicopathological data were obtained by reviewing medical records. The obstruction was diagnosed clinically and radiologically. Histopathological diagnosis was achieved endoscopically. Technical success rate (TSR) was defined as the ratio of patients with correctly placed SEMS upon stent deployment across the entire stricture length to total number of patients. Clinical success rate (CSR) was defined as the ratio of patients with technical success and successful maintenance of stent function before elective surgery (regardless of number of SEMS deployed) to total number of patients. The surgical success rate (SSR) of colorectal stent as a bridge to surgery was defined as the ratio of patients with successful surgical procedures. Unsuccessful surgical outcomes were defined as being due to insufficient colonic decompression. The technical, clinical, surgical success rates and complications after stenting were assessed.
RESULTS: The median age of patients was 64 (36 to 89). 44.9% of patients were male and 55.1% were female. Eighteen patients had the obstruction located in the rectum, 15 patients in the rectosigmoid region, 10 patients in the sigmoid region, and 6 patients had a tumor causing obstruction in the proximal colon. Each patient was categorized pathologically as stage 2 (32.7%, 16 patients) or stage 3 (42.9%, 21 patients) and 12 patients (24.4%) had metastatic disease. None of the patients received chemotherapy before stenting. Stenting was undertaken in 37 patients as a bridge to surgery, and in 12 patients stents were used for palliation. Median time to surgery after stenting was 30 ± 91.9 d. All surgery was completed in one single operation and thus no colostomy with stoma was needed. The median overall survival rate of patients with stage 2-3 colorectal cancer was 53.1 mo and stage 4 was 37.1 mo (P = 0.04). Metastatic colorectal patients who were treated palliatively with stents had backbone chemotherapy with oxaliplatin and/or irinotecan-based regimens plus antiangiogenic therapies, especially bevacizumab. Resolution of the obstruction and clinical improvement was achieved in all patients. The technical, clinical and surgical success rates were 95.9%, 100% and 94.6%, respectively.
CONCLUSION: The efficacy and safety of colonic stents was demonstrated both as a bridge to surgery and for palliative decompression. In addition, results emphasize the importance of the skills of the endoscopist in colonic stenting.
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