Treatment of Thoracic Esophageal Anastomotic Leaks and Esophageal Perforations with Endoluminal Stents: Efficacy and Current Limitations

Background  Intra-thoracic esophageal leakage after esophageal resection or esophageal perforation is a life-threatening event. The objective of this non-randomized observational study was to evaluate the effects of endoluminal stent treatment in patients with esophageal anastomotic leakages or perforations in a single tertiary care center. Methods  Thirty-two consecutive patients with an intrathoracic esophageal leak, caused by esophagectomy (n = 19), transhiatal gastrectomy (n = 3), laparoscopic fundoplication (n = 2), and iatrogenic or spontaneous perforation (n = 8), undergoing endoscopic stent treatment were evaluated. Hospital stay, mortality and morbidity, sealing rate, extraction rates, complications, and long-term effects were measured. Results  Median time interval between diagnosis and stent treatment was 3 and 5 days, respectively. Eighteen patients had futile surgical closure of the defect before stenting, while in 14 patients, stent placement was the primary treatment for leakage. Stent placement was technically correct in all patients. Functional sealing was achieved in 78%. Mortality was 15.6%. Stent extraction rate was 70%. Overall method-related complications occurred in nine patients (28%). Conclusions  Implantation of self-expanding stents after esophageal resection or perforation is a feasible and safe procedure with an acceptable morbidity even if used as last-choice treatment. Dirk Tuebergen and Emile Rijcken contributed equally to this work.     

Self-expanding Polyflex plastic stents in esophageal disease: various indications,complications, and outcomes

Background Esophageal stenting has become an important technique in the treatment of different clincal problems such as malignant or benign stenosis, anastomotic leaks after surgery, or fistulas. In this study we present our experience with the self-expanding Polyflex plastic stent in various indications, arising complications, and patient’s outcomes. Methods Over a three-year period, 35 patients underwent self-expanding Polyflex plastic stent placement for esophageal stenosis (n = 23) with 22 malignant, and for perforations, fistulas, or anastomotic leaks after surgery (n = 12). The short-term efficacy and long-term outcomes were analyzed. Results In patients with stenosis, implantation was performed without any complications in 91% (21/23). In one patient perforation occurred while passing the stenosis; in another patient the stent dislocated during the insertion procedure. Dysphagia score improved from 3.0 to 1.0 after stenting. In all patients with perforations, fistulas, or anastomotic leaks (n = 12), stents were placed successfully without any complication. Complete sealing of the mucosal defect was proven by radiography in 92% (n = 11) and healing was seen in 42% (n = 5). If indicated, stent removal was performed without any complications. Stent migration (n = 13; 37%) was the most common long-term complication. Conclusions The placement of self-expanding Polyflex plastic stents is a highly sufficient and cost-effective treatment for malignant and benign esophageal disorders. Because the long-term results were highly favorable, self-expanding plastic stent placement could be used as the initial treatment for various conditions.     

Endoscopic therapy for esophageal perforation or anastomotic leak with a self-expandable metallic stent

Background

Leaks of the esophagus are associated with a high mortality rate and need to be treated as soon as possible. Therapeutic options are surgical repair or resection or conservative management with cessation of oral intake and antibiotic therapy. We evaluated an alternative approach that uses self-expandable metallic stents (SEMS).

Methods

Between 2002 and 2007, 31 consecutive patients with iatrogenic esophageal perforation (n = 9), intrathoracic anastomotic leak after esophagectomy (n = 16), spontaneous tumor perforation (n = 5), and esophageal ischemia (n = 1) were treated at our institution. All were treated with endoscopic placement of a covered SEMS. Stent removal was performed 4 to 6 weeks after implantation. To exclude continuous esophageal leak after SEMS placement, radiologic examination was performed after stent implantation and removal.

Results

SEMS placement was successful in all patients and a postinterventional esophagogram demonstrated full coverage of the leak in 29 patients (92%). In two patients, complete sealing could not be achieved and they were referred to surgical repair. Stent migration was seen in only one patient (3%). After removal, a second stent with larger diameter was placed and no further complication occurred. Two patients died: one due to myocardial infarction and one due to progressive ischemia of the esophagus and small bowl as a consequence of vascular occlusion. Stent removal was performed within 6 weeks, and all patients had radiologic and endoscopic evidence of esophageal healing.

Conclusions

Implantation of covered SEMS in patients with esophageal leak or perforation is a safe and feasible alternative to operative treatment and can lower the interventional morbidity rate.     

Stent implantation as a treatment option in patients with thoracic anastomotic leaks after esophagectomy

Background In patients with esophagectomy and gastric pull up for esophageal carcinoma anastomotic leaks are a well-known complication and a major cause of morbidity and mortality. Objective We evaluated stent implantation as a treatment option in patients with thoracic anastomotic leaks after esophagectomy. Methods 269 patients with esophageal cancer (adenocarcinoma n = 212, squamous cell carcinoma n = 57) had undergone esophagectomy and gastric pull up with an intrathoracic anastomosis between January 1998 and December 2005. A thoracic anastomotic leak was clinically and endoscopically proven in 12 patients (4.5%). Endoscopic insertion of a self-expanding covered metal stent at the site of the anastomotic leak was performed in 10 patients; two patients were treated with fibrin glue. Results Stents were successfully placed in all patients without complications. In all but one patient (n = 9) radiological examination showed complete closure of the leakage. In one patient the stent was endoscopically corrected and complete closure could be achieved thereafter. The stent could be removed after six weeks in five patients. Stent migration occurred in four patients. In all but one patient (n = 7) definitive leak occlusion was achieved. Two patients died during their hospital stayfor reasons not related to the stent placement. Conclusion Stent implantation in patients with thoracic anastomotic leaks after esophagectomy is an easily available and effective treatment option with low morbidity, but stent migration does occur.     

Critical Appraisal of the Impact of Oesophageal Stents in the Management of Oesophageal Anastomotic Leaks and Benign Oesophageal Perforations: An Updated Systematic Review

Introduction

Endoscopic placement of oesophageal stents may be used in benign oesophageal perforation and oesophageal anastomotic leakage to control sepsis and reduce mortality and morbidity by avoiding thoracotomy. This updated systematic review aimed to assess the safety and effectiveness of oesophageal stents in these two scenarios.

Methods

A systematic literature search of all published studies reporting use of metallic and plastic stents in the management of post-operative anastomotic leaks, spontaneous and iatrogenic oesophageal perforations were identified. Primary outcomes were technical (deploying ≥ 1 stent to occlude site of leakage with no evidence of leakage of contrast within 24–48 h) and clinical success (complete healing of perforation or leakage by placement of single or multiple stents irrespective of whether the stent was left in situ or was removed). Secondary outcomes were stent migration, perforation and erosion, and mortality rates. Subgroup analysis was performed for plastic versus metallic stents and anastomotic leaks versus perforations separately.

Results

A total of 66 studies (n = 1752 patients) were included. Technical and clinical success rates were 96% and 87%, respectively. Plastic stents had significantly higher migration rates (24% vs 16%, p = 0.001) and repositioning (11% vs 3%, p < 0.001) and lower technical success (91% vs 95%, p = 0.032) than metallic stents. In patients with anastomotic leaks, plastic stents were associated with higher stent migration (26% vs 15%, p = 0.034), perforation (2% vs 0%, p = 0.013), repositioning (10% vs 0%, p < 0.001), and lower technical success (95% vs 100%, p = p = 0.002). In patients with perforations only, plastic stents were associated with significantly lower technical success (85% vs 99%, p < 0.001).

Conclusions

Covered metallic oesophageal stents appear to be more effective than plastic stents in the management of oesophageal perforation and anastomotic leakage. However, quality of evidence of generally poor and high-quality randomised trial is needed to further evaluate best management option for oesophageal perforation and anastomotic leakage.

     

The role of clips in preventing migration of fully covered metallic esophageal stents: a pilot comparative study

Background

Migration is the most common complication of the fully covered metallic self-expanding esophageal stent (SEMS). This study aimed to determine the potential preventive effect of proximal fixation on the mucosa by clips for patients treated with fully covered SEMS.

Methods

In this study, 44 patients (25 males, 57%) were treated with fully covered SEMS including 22 patients with esophageal stricture (4 malignant obstructions, 6 anastomotic strictures, and 12 peptic strictures) and 22 patients with fistulas or perforations (10 anastomotic leaks, 4 perforations, and 8 postbariatric surgery fistulas). The Hanarostent (n?=?25), Bonastent (n?=?5), Niti-S (n?=?12), and HV-stent (n?=?2) with diameters of 18 to 22?mm and lengths of 80 to 170?mm were used. Two to four clips (mean, 2.35?±?0.75 clips) were used consecutively in 23 patients to fix the upper flared end of the stent with the esophageal mucosal layer. Stent migration and its consequences were collected in the follow-up assessment with statistical analysis to compare the patients with and without clip placement.

Results

No complication with clip placement was observed, and the retrieval of the stent was not unsettled by the persistence of at least one clip (12 cases). Stent migration was noted in 15 patients (34%) but in only in 3 of the 23 patients with clips (13%). The number of patients treated to prevent one stent migration was 2.23. The predictive positive value of nonmigration after placement of the clip was 87%. In the multivariate analysis, the fixation with clips was the unique independent factor for the prevention of stent migration (odds ratio, 2.3; 95% confidence interval, 0.10?C0.01; p?=?0.03).

Conclusions

Anchoring of the upper flare of the fully covered SEMS with the endoscopic clip is feasible and significantly reduces stent migration.     

Use of a specially designed partially covered self-expandable metal stent (PSEMS) with a 40-mm diameter for the treatment of upper gastrointestinal suture or staple line leaks in 11 cases

Introduction

The use of self-expandable stents to treat postoperative leaks and fistula in the upper gastrointestinal (GI) tract is an established treatment for leaks of the upper GI tract. However, lumen-to-stent size discrepancies (i.e., after sleeve gastrectomy or esophageal resection) may lead to insufficient sealing of the leaks requiring further surgical intervention. This is mainly due to the relatively small diameter (≤30 mm) of commonly used commercial stents. To overcome this problem, we developed a novel partially covered stent with a shaft diameter of 36 mm and a flare diameter of 40 mm.

Methods

From September 2008 to September 2010, 11 consecutive patients with postoperative leaks were treated with the novel large diameter stent (gastrectomy, n = 5; sleeve gastrectomy, n = 2; fundoplication after esophageal perforation, n = 2; Roux-en-Y gastric bypass, n = 1; esophageal resection, n = 1). Treatment with commercially available stents (shaft/flare: 23/28 mm and 24/30 mm) had been unsuccessful in three patients before treatment with the large diameter stent. Due to dislocation, the large diameter stent was anchored in four patients (2× intraoperatively with transmural sutures, 2× endoscopically with transnasally externalized threads).

Results

Treatment was successful in 11 of 11 patients. Stent placement and removal was easy and safe. The median residence time of the stent was 24 (range, 18–41) days. Stent dislocation occurred in four cases (36 %). It was treated by anchoring the stent. Mean follow-up was 25 (range, 14–40) months. No severe complication occurred during or after intervention and no patient was dysphagic.

Conclusions

Using the novel large diameter, partially covered stent to seal leaks in the upper GI tract is safe and effective. The large diameter of the stent does not seem to injure the wall of the upper GI tract. However, stent dislocation sometimes requires anchoring of the stent with sutures or transnasally externalized threads.     

The use of self-expanding silicone stents in esophageal cancer care: optimal pre-, peri-, and postoperative care

Background  Preoperative nutritional supplementation, management of esophageal leaks, and postoperative anastomotic strictures still remain common problems in the management of esophageal cancer. Jejunal feeding tubes, total parenteral nutrition (TPN) with nasogastric suction, and repeated esophageal dilations remain the most common treatments, respectively. The aim of this study was to evaluate the use of removable silicone stents in (1) the preoperative nutritional optimization during neoadjuvant therapy, (2) the management of perioperative anastomotic leak, and (3) the management of postoperative anastomotic strictures. Methods  Review of our prospectively maintained esophageal database identified 15 patients who had removable self-expanding silicone stents placed in the management of one of these three management problems from July 2004 to August 2006. Results  Preoperative therapy: Five patients underwent initial stent placement in preparation for neoadjuvant therapy. Dysphagia relief was seen in 100% of patients, with optimal caloric needs taken within 24 h of placement. All patients tolerated neoadjuvant therapy without delay from dehydration or malnutrition. One stent migration was found at the time of operation, which was removed without sequelae. Perioperative therapy: Five patients developed delayed (>10 days) esophageal leaks that were managed with removable esophageal stent and percutaneous drainage (in three patients). All patients had successful exclusion of the leak on the day of the procedure with resumption of oral intake on the evening of procedure. All five healed leaks without sequelae. Postoperative therapy: Five patients developed postoperative anastomotic strictures that required dilation and placement of removable esophageal stent. The median number of dilations was 1 (range 1–2), with all stents placed for approximate 3 months duration. All patients had immediate dysphagia relief after stent placement. Conclusion  Removable esophageal stents are novel treatment option to optimize relief of symptoms and return the patients back to a more normal oral intake. Continued evaluation is needed to consider stent use as first-line therapy.     

The Use of Endoscopic Stent in Management of Leaks After Sleeve Gastrectomy

Gastric leak after sleeve gastrectomy can lead to significant morbidity and mortality. The aim of this study was to examine the safety and efficacy of endoscopic deployment of a covered esophageal stent in the management of leaks after sleeve gastrectomy. Three consecutive patients who underwent sleeve gastrectomy at outside institutions presented with leaks. All three patients underwent endoscopic placement of a covered stent. Additional procedures included laparoscopic or percutaneous drainage of abdominal collection(s). The patients were two women and one man, with a mean age of 34 years. One patient presented acutely at day 7 after the index operation and two patients presented late at 6 and 9 months, respectively. Two patients had proximal gastric leaks and one patient had a proximal gastric leak with a concomitant obstruction at the mid-aspect of the gastric sleeve. Endoscopic deployment of a covered stent was successful in all cases. There were no complications relating to the stent placement. The stent was removed at 6 weeks in two patients and at 4 months in one patient. The use of endoscopic stent was a safe and effective option in the management of leaks after sleeve gastrectomy.     

Mesh complications after prosthetic reinforcement of hiatal closure: a 28-case series

Background  Primary laparoscopic hiatal hernia repair is associated with up to a 42% recurrence rate. This has lead to the use of mesh for crural repair, which has resulted in an improved recurrence rate (0–24%). However, mesh complications have been observed. Methods  We compiled two cases, and our senior author contacted other experienced esophageal surgeons who provided 26 additional cases with mesh-related complications. Care was taken to retrieve technical operative details concerning mesh size and shape and implantation technique used. Results  Twenty-six patients underwent laparoscopic and two patients open surgery for large hiatal hernia (n = 28). Twenty-five patients had a concomitant Nissen fundoplication, two a Toupet fundoplication, and one a Watson fundoplication. Mesh types placed were polypropylene (n = 8), polytetrafluoroethylene (PTFE) (n = 12), biological mesh (n = 7), and dual mesh (n = 1). Presenting symptoms associated with mesh complications were dysphagia (n = 22), heartburn (n = 10), chest pain (n = 14), fever (n = 1), epigastric pain (n = 2), and weight loss (n = 4). Main reoperative findings were intraluminal mesh erosion (n = 17), esophageal stenosis (n = 6), and dense fibrosis (n = 5). Six patients required esophagectomy, two patients had partial gastrectomy, and 1 patient had total gastrectomy. Five patients did not require surgery. In this group one patient had mesh removal by endoscopy. There was no immediate postoperative mortality, however one patient has severe gastroparesis and five patients are dependent on tube feeding. Two patients died 3 months postoperatively of unknown cause. There is no apparent relationship between mesh type and configuration with the complications encountered. Conclusion  Complications related to synthetic mesh placement at the esophageal hiatus are more common than previously reported. Multicenter prospective studies are needed to determine the best method and type of mesh for implantation.     

Early detection of anastomotic leak with C-reactive protein increases the chances of anastomotic salvage

Aim

Anastomotic leak results in increased morbidity and affects functional and oncological outcomes after colectomy. Measurement of C-reactive protein (CRP) allows early detection of anastomotic leaks. The aim of this study was to evaluate the benefit to the patient of earlier diagnosis and management of anastomotic leaks, namely avoiding takedown of the anastomosis.

Method

Patients with an anastomotic fistula after elective colorectal surgery from 2010 to 2020 were included. Three periods were defined according to progressive adherence to the CRP protocol in our department. A comparison was made between the periods ‘before’ (2010–2013) and ‘after’ (2016–2020) in terms of morbidity, mortality, anastomotic salvage, days spent in hospital within the first postoperative month, timely adjuvant chemotherapy and anastomotic stenosis.

Results

Out of 2655 elective colorectal operations, 171 patients presented with an anastomotic leak and 123 patients were included in the study. In univariate analysis, patients in the ‘after’ group had fewer severe complications (Clavien–Dindo Grade III to IV, 66.7% vs. 56.9; p = 0.017); the difference did not reach significance regarding timely postoperative chemotherapy (p = 0.058) and anastomotic stenosis (p = 0.682). In both, univariate and multivariate analysis, the ‘after’ period increased the chances of preserving the anastomosis (OR = 2.37 [1.08–5.17]) and increased the number of days out of hospital (p = 0.0002).

Conclusion

A CRP-based protocol for the screening of anastomotic leaks after colorectal surgery was related to increased anastomotic conservation, a decreased impact and severity of the leak and a shorter length of hospital stay.     

Anastomotic Diameters and Strictures following Esophagectomy and Total Gastrectomy in 256 Patients

The prevalence of anastomotic strictures in esophageal anastomoses provides us with limited information about the anastomotic healing process. This prospective study evaluates the exact esophageal anastomotic diameters in 256 patients who underwent esophagectomy and esophagogastrostomy without pyloroplasty (n= 107) or total gastrectomy and Roux reconstruction (n= 149). No perioperative chemoradiotherapy was given. Anastomotic strictures and diameters were assessed during endoscopy by a separately inserted (inflated to the anastomotic width) balloon catheter. The anastomotic diameters increased significantly during the first postoperative year in the esophagectomy (p= 0.001) and gastrectomy (p < 0.001) groups. The anastomoses in the gastrectomy group were significantly wider than those in the esophagectomy group 3 (25.7 versus 19.9 mm), 6 (28.5 versus 22.0 mm), and 12 (30.5 versus 23.3 mm) months after surgery (p < 0.001). Neither the anastomotic site (neck or chest) in the esophagectomy group (p= 0.176) nor that in the gastrectomy group (abdomen or chest) (p= 0.577) influenced the anastomotic diameter. Benign anastomotic strictures were most frequently found after 3 months and after esophagectomy. Esophagojejunostomies performed with 2 linear stapling devices or cartridge size 28 mm showed the widest anastomoses with only 1 stricture. Esophagogastric anastomoses following esophagectomy are narrower and develop more strictures than esophagojejunal anastomoses after total gastrectomy, but both dilate during the first year.     

Radiological and clinical outcome of screw placement in adolescent idiopathic scoliosis: evaluation with low-dose computed tomography

Posterior corrective surgery using “all pedicle screw construct” carries risk of neurovascular complications. The study aims were to assess the screw placement in patients with adolescent idiopathic scoliosis using CT with low-radiation dose, and to evaluate the clinical outcome in patients with misplaced pedicle screws. CTs of 49 consecutive patients (873 screws, 79% thoracic) were retrospectively evaluated by two independent radiologists. A new grading system was developed to distinguish between lateral, medial and anterior cortical perforations, endplate perforation and foraminal perforation. The grading system is based on whether the cortical violation is partial or total rather than on mm-basis. The overall rate of screw misplacement was 17% (n = 149): 8% were laterally placed and 6.1% were medially placed. The rates of anterior cortical, endplate and foraminal perforation were 1.5, 0.9, and 0.5%, respectively. Lateral cortical perforation was more frequent in the thoracic spine (P = 0.005), whereas other types of misplacement including medial cortical perforation were more frequent on the left and the concave side of scoliotic curves (P = 0.002 and 0.003). No neurovascular complications were reported. The association between the occurrence of screw misplacement and the Cobb angle was statistically significant (P = 0.037). Misplacements exceeding half screw diameter should be classified as unacceptable. Low-dose CT implies exposing these young individuals to a significantly lower radiation dose than do other protocols used in daily clinical practice. We recommend using low-dose CT and the grading system proposed here in the postoperative assessment of screw placement.     

Management of thoracic esophageal perforations

Objective: To assess our results of a prospective algorithm applied to patients with thoracic esophageal perforation. Methods: A retrospective review of a prospective algorithm. Patients with esophageal perforation underwent an esophagram. If there was a contained esophageal perforation they were admitted, kept nothing by mouth, and restudied in 3–5 days. If the leak was not contained, they underwent operative repair. Results: From 1/1998 to 6/2009 there were 81 patients. The gastrograffin swallow showed 56 patients had contained perforations and 25 did not. Twenty-two of the 25 patients with noncontained perforation underwent immediate operative repair (one patient refused surgery, two were not stable enough for the operating room); their morbidity was 68% and there were six (24%) operative mortalities. Median hospital length of stay (LOS) was 11 days (range, 2–120). Of the 56 patients with contained perforations, 26 were managed successfully without surgery. However, 30 of the patients initially treated nonoperatively eventually required operations due to new pleural effusion, mediastinal abscess, or conversion to noncontained perforation. Their morbidity was 41% and there were three operative mortalities (5%). On univariate analysis, these patients were more likely to have undergone previous esophageal procedures (surgical or dilation) (p = 0.03), had new or increased pleural effusion (p = 0.04), and had greater than 24 h between diagnosis and treatment (p = 0.02). Only greater than 24 h between diagnosis and treatment remained a significant predictor on multivariate analysis. Their median hospital LOS was 21 days (range, 7–77). Conclusion: Contained thoracic esophageal perforations can usually be safely managed nonoperatively without significant morbidity or mortality. However, careful in-hospital monitoring is needed if surgery is not chosen.     

The role of endoscopic stents in the management of chronic anastomotic and staple line leaks and chronic strictures after bariatric surgery

BackgroundThe use of endoluminal stents has been proposed for the management of fistulas and anastomotic strictures after bariatric surgery. The objective of our study was to determine the success of endoscopically placed, self-expandable metal stents (SEMS) in bariatric patients specifically with either chronic persistent anastomotic or staple line leaks/fistulas or chronic, persistent anastomotic strictures.MethodsWe treated 21 patients including 5 with chronic staple line leaks/fistulas (4 from the gastric sleeve after biliopancreatic diversion with duodenal switch [BPD/DS] and 1 after removal of an eroding laparoscopic adjustable gastric band) and 16 with chronic anastomotic strictures (15 at the gastrojejunostomy after Roux-en-Y gastric bypass and 1 at the duodenoileal anastomosis after BPD/DS). Patients with early leaks or anastomotic strictures were excluded.ResultsAll but one of these patients had been referred to our institution after chronic treatment elsewhere was unsuccessful with prior stent placement for fistulas or multiple endoscopic dilations for strictures. Their bariatric operations had been performed a mean of 386 days beforehand. Stent placement was performed successfully in all patients without complications but was successful in only 4 of 21 patients (19%)—2 with chronic fistulas and 2 with chronic anastomotic strictures. Stent migration occurred in 10 patients (47%); the migrated stents were removed/replaced endoscopically in 7 patients but required elective operative removal in 3 with concomitant correction of the leak, fistula, or anastomotic stricture; none were operated emergently.ConclusionOnly 4 of 21 patients with a chronic persistent leak or anastomotic stricture were treated definitively using a SEMS. Although endoluminal stents may not lead to resolution of a chronic leak or stricture, SEMS may suppress ongoing sepsis and allow patients to undergo nutritional resuscitation orally before operative correction.     

Stent placement in the management of oesophageal leaks

Objective: To examine retrospectively the patients of our department who had a self-expandable totally covered metal stent placed for oesophageal leak. METHODS: Patients hospitalised in our department for oesophageal cancer and/or oesophageal perforation between 2004 and 2006. All medical records were retrospectively reviewed. Seventy-two patients underwent oesophageal resection for oesophageal cancer and 16 were managed for oesophageal perforations. RESULTS: Eight out of 72 patients submitted to resection for oesophageal cancer had postoperative leaks, while one patient developed tracheo-oesophageal fistula (TEF) due to prolonged mechanical ventilation. Six of them had stent placement in first intention, whereas two received the procedure after an unsuccessful repeat operation. The mean stent placement time was 18.4 days (SD=15.2 days), whereas the median was 14 days. The leak was managed efficiently by the stent in seven patients, whereas two patients needed repeat operations (one with TEF). The mean stent removal time was 56.8 days (SD=30.5 days) and the median was 40 days. None developed anastomotic stricture. On the other hand, three out of 16 patients with perforation had a stent, two of them for Boerhaave syndrome and one for iatrogenic rupture after bariatric surgery. One of them required the stent 17 days after surgical repair with excellent results, while the other two patients had the stent placed immediately, but still needed thoracotomy to control the leak. CONCLUSIONS: Stent placement can prove very useful in the management of post-oesophagectomy anastomotic leaks, but its contribution needs to be evaluated with caution in cases of oesophageal perforations or TEF. Larger series and prospective comparative clinical trials could eventually clarify the role of stents in clinical practice of surgical patients.     

Endoscopic treatment of mediastinal anastomotic leaks

BACKGROUND: Surgery, as well as conservative treatment, in patients with clinically apparent intrathoracic anastomotic leaks are often associated with poor results and carry a high morbidity and mortality. This report describes our results with the endoscopic treatment of intrathoracic anastomotic leakages. PATIENTS: 27 consecutive patients presenting with clinically apparent intrathoracic anastomotic leak, caused by resection of an epiphrenic diverticulum (n=1), esophagectomy for esophageal cancer (n=19), limited resection for carcinoma of the gastroesophageal junction (n=1) or gastrectomy for gastric cancer (n=6) were endoscopically treated. The extent of the dehiscences ranged from about 10-70%. After endoscopic lavage and debridement of the leakage (mean duration: 16,8 days) the leaks were closed with fibrin clue (n=9) or endoclips (n=2) in cases of smaller leaks or by stent placement (n=11), stent placement after unsuccessful fibrin clue injections (n=3) or stent placement and endoclipping (n=1) in patients with a large leakage. Simultaneously the periesophageal mediastinum was drained by chest drains. RESULTS: 25 of 27 patients were successfully treated endoscopically. Under endoscopic treatment one patient died due to septic multiorgan failure. Another patient developed a refractory, persistent leak. Procedure related complications (stent migration, anastomotic stenosis) were obtained in 6 patients. CONCLUSION: An endoscopic approach is successful and safe to treat symptomatic intrathoracic anastomotic leaks smaller than 70% of the circumference. An endoscopic lavage and debridement of the leak, prior to leak closure, seems to be helpful to reduce mediastinal and pleural inflammation. In patients with smaller leaks (<30%) fibrin clue injections and endoclipping is recommended. Patients with a dehiscence from 30-70% of the circumference profit from stent placement.     

Esophageal stents for leaks and perforations

Stenting of esophageal leaks, ie, anastomotic leaks or perforations, might be a minimally invasive alternative to surgery in most clinical situations. However, it must be emphasized that surgery should be considered if stent treatment in combination with drainage and antibiotics does not improve the clinical condition of the patient. Stent insertion should be performed as soon as possible after diagnosis of the leak.     

Management of ERCP-Related Perforations: Outcomes of Single Institution in Korea

Introduction  The aim of this study was to analyze clinicoradiologic findings and treatment outcomes of patients with endoscopic retrograde cholangiopancreatography (ERCP)-related perforations. Between May 2003 and November 2007, 2,247 ERCP procedures with or without sphincterotomy were performed at Ajou University Medical Center, Suwon, Korea, and 20 perforations (0.89%) were identified. Discussion  We retrospectively reviewed medical and surgical records of each patient. Of 18 patients, 11 patients (61.1%) underwent nonsurgical management, and seven patients (38.9%) received surgical management. There were no significant differences in age, gender, and laboratory findings between two groups (P > 0.05). The hospital stay was significantly longer in the operative group than that of the conservative group (P < 0.05, respectively). The most common cause of perforation was sphincterotomy (n = 8) in the conservative group whereas scope itself (n = 6) in operative group, showing a significant difference between the two groups (P < 0.05). The retroperitoneal air was most common findings in eight patients (72.7%) of the conservative group, while six (85.7%) patients of the operative group presented with intraperitoneal air, displaying a significant difference in location of air between the two groups (P < 0.05). Most of sphincterotomy-related perforations were managed nonsurgically. However, the scope-related perforations were usually large and required immediate surgery. Moreover, the delayed operation resulted in a longer hospital stay and high morbidity. Therefore, the selective early surgical intervention is suggested when scope-related perforations are discovered.     

Prophylactic negative vacuum therapy of high-risk esophageal anastomoses in pediatric patients

Background: Esophageal anastomoses are at risk for leak or stricture. Negative pressure vacuum-assisted closure (VAC) therapy is used to treat leak. We hypothesized that a prophylactic VAC (pEVAC) at the time of new anastomosis may lead to fewer leaks and strictures.Methods: Single center retrospective case-control study of patients undergoing high-risk esophageal anastomoses between July 2015 and January 2019. Outcomes of leak and long-term anastomotic failure (refractory stricture requiring surgery) were compared between groups.Results: Sixteen patients had a pEVAC placed during LGEA repair (N = 10) or stricture resection (N = 6). Of pEVAC cases, 3 (N = 1 Foker, N = 2 stricture resections) experienced leak (18.8%). In comparison, leak occurred in 9/41 (22%) Foker patients and in 1/20 (5%) stricture resections without pEVAC, all p > 0.05. Long-term anastomotic failure was more common in the pEVAC cohort versus controls (56.3% versus 11.5%, p < 0.001).Conclusions: Prophylactic EVAC placement does not appear to reduce leak and is associated with significantly greater odds of long-term anastomotic failure. Further device refinement could improve its potential role in prophylaxis of high-risk anastomoses, but future research is needed to better understand optimal patient selection, device design, and duration of pEVAC therapy.