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Peng W, Yan S, Huang Y, Cheng M, Liu T, Ren R, Chen Q, Zhang J, Gong W, Xing C, Wu Y. Laparoscopic proximal gastrectomy with right-sided overlap and single-flap valvuloplasty (ROSF): a case-series study. BMC Surg 2023; 23:90. [PMID: 37060019 PMCID: PMC10105452 DOI: 10.1186/s12893-023-01975-y] [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: 12/24/2022] [Accepted: 03/28/2023] [Indexed: 04/16/2023] Open
Abstract
BACKGROUND There is no standard reconstruction method following proximal gastrectomy, of which gastroesophageal reflux and anastomotic complications are of great concern. Though several techniques have been devised to overcome these postoperative complications, such as double tract reconstruction, double-flap technique and side overlap fundoplication by Yamashita, none of them is considered a perfect solution. Herein, we designed a novel method of esophagogastrostomy after laparoscopic proximal gastrectomy (LPG), named right-sided overlap and single-flap valvuloplasty (ROSF). METHODS Between March 2021 and December 2021, 20 consecutive patients underwent LPG-ROSF at Department of Gastrointestinal Surgery, Second Affiliated Hospital of Soochow University. Surgical outcomes and postoperative complications were recorded. All patients were followed-up until December 2022. Endoscopy and assessment of gastrointestinal symptoms were performed 1 year after surgery. Nutrition-related parameters including total body weight, hemoglobin, lymphocyte count, serum total protein, serum albumin and serum prealbumin were evaluated 1 year after surgery and compared with those before surgery. RESULTS The mean surgery time and anastomosis time was 285.3 ± 71.3 and 61.3 ± 11.2 min respectively. None of the patients had gastrointestinal early postoperative complications. Symptomatic reflux was observed in one patient (5%) while reflux esophagitis (Los Angeles Grade A) was observed in another patient (5%). Four patients (20%) had mild dysphagia (Visick score = II) but none of them had anastomotic stenosis. There were no significant changes in nutritional status postoperatively. CONCLUSIONS ROSF can be safely performed after LPG and has satisfactory outcomes in preventing reflux and stenosis, and maintaining nutritional status. This technique requires further validation.
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Affiliation(s)
- Wei Peng
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Shangcheng Yan
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Yikai Huang
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Ming Cheng
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Tianhua Liu
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Rui Ren
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Qiang Chen
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Jingyu Zhang
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Wei Gong
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Chungen Xing
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Yongyou Wu
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Soochow University, Suzhou, China.
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Ma X, Zhang X, Li B, Zhu T, Ma T, Zhang X, Qu B. Endoscopic Stricturotomy in the Treatment of Refractory Esophageal Anastomotic Strictures. Dysphagia 2023; 38:650-656. [PMID: 35859043 DOI: 10.1007/s00455-022-10495-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 07/01/2022] [Indexed: 11/03/2022]
Abstract
Refractory esophageal anastomotic strictures are a frequent challenge for endoscopists. The current therapeutic strategies have a significant restenosis rate, and patients usually require repeated sessions and suffer from dysphagia. Therefore, we propose a modified method named endoscopic stricturotomy (ES) to treat refractory esophageal anastomotic strictures. The patients diagnosed with refractory esophageal anastomotic strictures were enrolled in the cohort study. The method of ES is to incise longitudinally only a single strip of mucosa at the most prominent part of fibrotic scar and completely cut fibrotic tissues under the mucosa. The primary endpoint was the times of endoscopic therapies. The secondary endpoints include the effective rate, success rate, recurrence rate, endoscopic treatment intervals, complications, length of hospital stay, and surgical cost. The patients were followed up for at least 6 months after ES. The median anastomotic diameter of 12 patients was 2 mm (range 1 to 4 mm). Dysphagia were dramatically relieved in all patients (dysphagia grade from 3 to 1), the effective rate was 100%. During the follow-up, the 12 patients received a total number of 38 sessions, and the median number of ES sessions was 2.5 (1-9), and the success rate were 83%. Nine of the patients (75%) developed restenosis during follow-up, with a median interval of 38 days (15-315 days). No complications occurred during treatment and following up. The median hospital stay was 2 days (2-2.9 days), and the hospitalization costs was 3887.4 RMB (3632.8 RMB-4116.9 RMB). ES seems to be an effective treatment modality for refractory esophageal anastomotic strictures. Large prospective clinical trials are needed to confirm its utility and its place in the management of refractory esophageal anastomotic strictures (ChiCTR2000032997).
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Affiliation(s)
- Xiao Ma
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, No 246, Xuefu Road, NanGang District, Harbin, 150000, Heilongjiang, China
| | - Xu Zhang
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, No 246, Xuefu Road, NanGang District, Harbin, 150000, Heilongjiang, China
| | - Bing Li
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, No 246, Xuefu Road, NanGang District, Harbin, 150000, Heilongjiang, China
| | - Tingting Zhu
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, No 246, Xuefu Road, NanGang District, Harbin, 150000, Heilongjiang, China
| | - Tingting Ma
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, No 246, Xuefu Road, NanGang District, Harbin, 150000, Heilongjiang, China
| | - Xiaohui Zhang
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, No. 23, YouZheng Road, NanGang District, Harbin, 150001, Heilongjiang, China.
| | - Bo Qu
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, No 246, Xuefu Road, NanGang District, Harbin, 150000, Heilongjiang, China.
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Kobayashi S, Kanetaka K, Yoneda A, Yamaguchi N, Kobayashi K, Nagata Y, Maruya Y, Yamaguchi S, Hidaka M, Eguchi S. Endoscopic mucosal ischemic index for predicting anastomotic complications after esophagectomy: a prospective cohort study. Langenbecks Arch Surg 2023; 408:37. [PMID: 36648542 DOI: 10.1007/s00423-023-02783-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 12/19/2022] [Indexed: 01/18/2023]
Abstract
BACKGROUND Postoperative complications related to gastric conduit reconstruction are still common issues after McKeown esophagectomy. A novel endoscopic mucosal ischemic index is desired to predict anastomotic complications after McKeown esophagectomy. AIMS AND METHODS The purpose of this study was to prospectively evaluate the safety and efficacy of endoscopic examinations of the anastomotic region in the acute period after esophagectomy. Endoscopic examinations were performed on postoperative days (PODs) 1 and 8. The severity of ischemia was prospectively validated according to the endoscopic mucosal ischemic index (EMII). RESULTS A total of 58 patients were included after evaluating the safety and feasibility of the endoscopic examination on POD 1 in 10 patients. Anastomotic leakage occurred in 6 patients. Stricture occurred in 13 patients. A greater than 67% circumference and lesion length greater than 20 mm of anastomotic ischemic area (AIA) on POD 1 were associated with developing anastomotic leakage after esophagectomy (OR: 14.5; 95% CI: 1.8-306.5; P = 0.03, OR: 19.4; 95% CI: 1.7-536.8; P = 0.03). More than 67% circumferential ischemic mucosa and ischemic mucosal lengths greater than 20 mm of AIA on POD 1 were associated with developing anastomotic strictures after esophagectomy (OR: 6.4; 95% CI: 1.4-31.7; P = 0.02, OR: 5.9; 95% CI: 1.2-33.1; P = 0.03). Patients with either more than 67% circumferential ischemic mucosa or ischemic mucosal lengths greater than 20 mm of AIA on POD 1 were defined as EMII-positive patients. The sensitivity, specificity, and positive and negative predictive values of EMII positivity on POD 1 for leakage were 100%, 78.8%, 35.3%, and 100%, respectively. The sensitivity, specificity, and positive and negative predictive values of the EMII positivity on POD 1 for strictures were 69.2%, 82.2%, 52.9%, and 90.2%, respectively. CONCLUSIONS The application of an endoscopic classification system to mucosal ischemia after McKeown esophagectomy is both appropriate and satisfactory in predicting anastomotic complications. TRIAL REGISTRATION Clinical Trial.gov Registry, ID: NCT02937389, Registration date: Oct 17, 2015.
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Affiliation(s)
- Shinichiro Kobayashi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 8528102, Japan.
| | - Kengo Kanetaka
- Department of Tissue Engineering and Regenerative Therapeutics in Gastrointestinal Surgery, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, Japan
| | - Akira Yoneda
- Department of Surgery, National Hospital Organization Nagasaki Medical Center, Kubara 2-1001-1, Ohmura, Nagasaki, Japan
| | - Naoyuki Yamaguchi
- Department of Endoscopy, Nagasaki University Hospital, Sakamoto 1-7-1, Nagasaki, Japan
| | - Kazuma Kobayashi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 8528102, Japan
| | - Yasuhiro Nagata
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 8528102, Japan
- Center for Comprehensive Community Care Education, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, Japan
| | - Yasuhiro Maruya
- Department of Tissue Engineering and Regenerative Therapeutics in Gastrointestinal Surgery, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, Japan
| | - Shun Yamaguchi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 8528102, Japan
| | - Masaaki Hidaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 8528102, Japan
| | - Susumu Eguchi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 8528102, Japan
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Takahashi K, Nishikawa K, Tanishima Y, Ishikawa Y, Kobayashi T, Masuda T, Kurogochi T, Yuda M, Tanaka Y, Matsumoto A, Yano F, Eto K. Risk stratification of anastomotic stricture using early postoperative endoscopic and computed tomography findings in patients undergoing esophagectomy with cervical esophagogastric anastomosis for esophageal cancer. Dis Esophagus 2022; 35:6530218. [PMID: 35178563 DOI: 10.1093/dote/doac004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 12/13/2021] [Indexed: 12/11/2022]
Abstract
Anastomotic stricture (AS) is one of the major complications after esophagectomy for esophageal cancer. We have previously reported that severe mucosal degeneration (MD) of the anastomotic site was associated with the incidence of AS. Meanwhile, there are few reports to correlate anastomotic internal circumference (AIC) with computed tomography (CT) with the incidence of AS. Therefore, this study was conducted to clarify the correlation of early postoperative endoscopic and CT findings with the incidence of AS. We assessed 205 patients who underwent esophagectomy. We then divided them into the non-AS group (n = 164) and the AS group (n = 41) and compared their background data and intraoperative and postoperative outcomes. We also evaluated the risk factors for AS using logistic regression model. Multivariate analysis revealed small AIC (P = 0.003; OR = 4.400; 95% CI = 1.650-11.700) and severe MD (P < 0.001; OR = 7.200; 95% CI = 2.650-19.600) as the independent risk factors for AS development. We also stratified the patients into the following four groups according to the incidence of AS: low-risk (normal AIC and intact or mild MD, 6.2%), intermediate-risk (small AIC and intact or mild MD, 29.4%), high-risk (normal AIC and severe MD, 42.9%), and very high-risk (small AIC and severe MD, 61.1%). Early postoperative endoscopic and CT findings were useful in predicting the development of AS after esophagectomy.
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Affiliation(s)
- Keita Takahashi
- Department of Gastrointestinal Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - Katsunori Nishikawa
- Department of Gastrointestinal Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - Yuichiro Tanishima
- Department of Gastrointestinal Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - Yoshitaka Ishikawa
- Department of Gastrointestinal Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - Takehiro Kobayashi
- Department of Gastrointestinal Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - Takahiro Masuda
- Department of Gastrointestinal Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - Takanori Kurogochi
- Department of Gastrointestinal Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - Masami Yuda
- Department of Gastrointestinal Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - Yujiro Tanaka
- Department of Gastrointestinal Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - Akira Matsumoto
- Department of Gastrointestinal Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - Fumiaki Yano
- Department of Gastrointestinal Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - Ken Eto
- Department of Gastrointestinal Surgery, Jikei University School of Medicine, Tokyo, Japan
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Circular Stapler Method for Avoiding Stricture of Cervical Esophagogastric Anastomosis. J Gastrointest Surg 2022; 26:725-732. [PMID: 35138510 DOI: 10.1007/s11605-022-05266-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 01/25/2022] [Indexed: 01/31/2023]
Abstract
BACKGROUND This study was performed to verify the superiority of a new "non-tensioning method" for avoiding stricture of the cervical esophagogastric anastomosis by circular stapling compared with the conventional method. METHODS In total, 395 consecutive patients who underwent McKeown esophagectomy with gastric conduit (GC) reconstruction were reviewed. A 4 cm-wide GC was created and pulled up at the cervical site through the retrosternal route. The esophagogastrostomy site of the GC was planned as far caudally as possible on the greater curvature side. In the conventional technique, the stapler was fired while pulling the GC to avoid tissue slack. In the non-tensioning technique, the stapler was fired through the natural thickness of the stomach wall. The length of the blind end was changed from 4 to 2 cm in the non-tensioning technique. Anastomotic leakage and stricture formation were compared between the two techniques, and adjustment was performed using propensity score matching. RESULTS The conventional group comprised 315 patients, and the non-tensioning group comprised 80 patients. Anastomotic leakage occurred in 22 (7%) and 2 (2.5%) patients, respectively (P = 0.134) [and in 9 (2.9%) and 2 (2.5%) patients, respectively, if leakage at the blind end was excluded]. Anastomotic stricture occurred in 92 (29.2%) and 3 (3.8%) patients, respectively (P < 0.001). The propensity score-matching analysis including 79 pairs of patients confirmed a lower stricture rate in the non-tensioning than conventional group (2.5% vs. 29.1%, P < 0.001). CONCLUSIONS The non-tensioning technique significantly reduced the incidence of anastomotic stricture compared with the conventional technique.
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Mucosal Congestion on the First Day Following Endoscopy Predicts Anastomotic Stricture After Esophagectomy. World J Surg 2022; 46:631-638. [PMID: 34993600 DOI: 10.1007/s00268-021-06397-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/20/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Anastomotic stricture is a relatively common postoperative complication after esophagectomy. Previous studies have indicated that impaired perioperative blood perfusion at the anastomosis is associated with the occurrence of stricture. Therefore, we analyzed the association between endoscopically assessed blood perfusion during the early postoperative period and anastomotic stricture. METHODS This retrospective study evaluated patients who underwent esophagectomy at Tokyo Medical and Dental University between 2010 and 2015. The patients had undergone nasal endoscopy on the 1st and 8th postoperative days. The findings were used to evaluate blood perfusion at the anastomosis and gastric tube, which was classified based on mucosal color as ischemia (white) or congestion (blue or black). Univariate and multivariable logistic regression analyses were performed to identify risk factors for anastomotic stricture. RESULTS The study included 197 patients and anastomotic stricture was observed in 60 patients (30.4%). The multivariable analysis revealed that postoperative gastric tube congestion was a risk factor for stricture (odds ratio [OR]: 6.440, 95% confidence interval [CI]: 2.660-15.600; p < 0.001). Lower risks of anastomotic stricture were associated with pathological stage III-IV disease (OR: 0.325, 95% CI: 0.161-0.656; p = 0.002). CONCLUSION This study revealed that endoscopically detected congestion at the anastomosis on the first postoperative day was a risk factor for anastomotic stricture.
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Anastomotic stricture after Ivor Lewis esophagectomy: An evaluation of incidence, risk factors, and treatment. Surgery 2021; 171:393-398. [PMID: 34482991 DOI: 10.1016/j.surg.2021.07.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 07/13/2021] [Accepted: 07/20/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Anastomotic stricture is a recognized complication after esophagectomy. It can impact the patient's quality of life and may require recurrent dilatations. Thus, the aim of this study was to evaluate the frequency of strictures, contributing factors, and long-term outcomes of management in patients undergoing esophagectomy with thoracic anastomosis using a standardized circular stapled technique. METHODS All patients who underwent a 2-stage transthoracic esophagectomy with curative intent between January 2010 and December 2019 at NOGU, Newcastle upon Tyne, UK were included. All patients who underwent a stapled (circular) intrathoracic anastomosis using gastric conduits were included. Stricture incidence, number of dilatations to resolve strictures, and refractory stricture rate were recorded. RESULTS Overall, 705 patients were included with 192 (27.2%) developing strictures. Refractory strictures occurred in 38 patients (5.4%). One, 2, and 3 dilatations were needed for resolution of symptoms in 46 (37.4%), 23 (18.7%), and 20 (16.3%) patients, respectively. Multivariable analysis identified the occurrence of an anastomotic leak (odds ratio 1.906, 95% confidence interval 1.088-3.341, P = .024) and circular staple size <28 mm (odds ratio 1.462, 95% confidence interval 1.033-2.070, P = .032) as independent predictors of stricture occurrence. Patients with anastomotic leaks were more likely to develop refractory strictures (13.1% vs 4.7%, odds ratio 3.089, 95% confidence interval 1.349-7.077, P = .008). CONCLUSION This study highlights that nearly 30% of patients having a circular stapled anastomosis will require dilatation after surgery. Although the majority will completely resolve after 2 dilatations, 5% will have longer-term problems with refractory strictures.
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Jiang H, Hua R, Sun Y, Guo X, Liu Z, Su Y, Li B, Yang Y, Zhang H, Li Z. Risk Factors for Anastomotic Complications After Radical McKeown Esophagectomy. Ann Thorac Surg 2021; 112:944-951. [DOI: 10.1016/j.athoracsur.2020.09.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 08/26/2020] [Accepted: 09/18/2020] [Indexed: 02/08/2023]
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Åkesson O, Heyman I, Johansson J, Rissler P, Falkenback D. Early endoscopic assessment after esophagectomy can predict anastomotic complications: a novel scoring system. Surg Endosc 2021; 36:1903-1909. [PMID: 33835253 DOI: 10.1007/s00464-021-08472-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 03/26/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Anastomotic leakage after esophagectomy is a serious and demanding complication. Early detection and treatment can probably prevent clinical deterioration of the patient. We have used early endoscopic assessment and a novel endoscopy score to predict anastomotic complications. METHODS 57 patients planned for Ivor Lewis esophagectomy were included. Endoscopy videos were recorded and biopsies were taken from the gastric conduit on day 7 or 8 after esophagectomy. A scoring system based on the endoscopic appearance, the combined endoscopy score (0-6), was developed. Scoring of the videos was done blinded. Patient outcome with regards to anastomotic complications was registered on postoperative day 30 in accordance with the ECCG definitions and compared to histopathology assessment and the combined endoscopy score retrospectively. RESULTS The rate of anastomotic defect (necrosis and leakage, ECCG definitions) was 19%. 7 out of 8 patients with a combined endoscopy score of ≥ 4 developed anastomotic defects. The combined endoscopy score was the only predictor for anastomotic complications. CONCLUSION Prediction of anastomotic complications enables early detection and treatment which often limits the clinical extent of the complication. Early postoperative endoscopy is safe and a relatively simple procedure. The combined endoscopy score is an accurate tool to predict anastomotic complications.
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Affiliation(s)
- Oscar Åkesson
- Department of Surgery, Skåne University Hospital, Lund, Sweden.
- Department of Clinical Sciences, Lund University, Lund, Sweden.
- Department of Surgery, Skåne University Hospital, Getingevägen 4, 222 41, Lund, Sweden.
| | - Isak Heyman
- Department of Surgery, Skåne University Hospital, Lund, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Jan Johansson
- Department of Surgery, Skåne University Hospital, Lund, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Pehr Rissler
- Division of Laboratory Medicine, Department of Pathology, Skåne University Hospital, Lund, Sweden
| | - Dan Falkenback
- Department of Surgery, Skåne University Hospital, Lund, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
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