[Anastomotic leakage following surgical resection in the upper gastrointestinal tract]

Surgical resection is the consistent component of curative treatment strategies for primary malignant diseases of the stomach and the esophagus. The placement of anastomoses for the necessary reconstruction still accounts for substantial morbidity and in the case of a failure to rescue also for mortality, especially for esophagojejunostomy and esophagogastrostomy. The diagnostics of anastomotic leakage routinely involve computed tomography and endoscopy and timely performance appears to be essential. Endoscopy can simultaneously initiate the essential treatment step. A major reason for the improvement of postoperative outcomes after resection in the upper gastrointestinal tract in the last decades is the successful and mostly endoscopically performed management of anastomotic leakage, whereby different endoscopic treatment options are now available. Endoscopic vacuum therapy has become established as the standard, normally with an endoscopic vacuum sponge technique but is also now supplemented by a combination system of vacuum sponge and stent. Furthermore, a foil-coated multiple lumen nasogastric tube represents another available option, which can possibly especially be used as a prophylactic measure. The longest established endoscopic therapy option for anastomotic leaks, the endoluminal metal stent, has been replaced as the standard by the vacuum treatment but is still used in suitable situations. Additionally, there are endoscopic suture devices that are currently only used very occasionally. Surgical revision is always available as treatment escalation but is only recommended for very early occurrences and possibly technically related anastomotic leakage and in the case of failure of endoscopic treatment. This article describes and summarizes the diagnostics and treatment of anastomotic leakages after surgical procedures of the upper gastrointestinal tract.

Endoscopic lavage for an infected pelvic hematoma in a patient with pelvic sepsis after anterior pelvic exenteration

Anastomotic leakage and subsequent pelvic sepsis are serious complications after surgery for pelvic malignancies, particularly challenging due to the large pelvic cavity dead space post-exenteration. We report a 47-year-old man treated for a severely infected pelvic hematoma and sepsis following anastomotic leakage after anterior pelvic exenteration. Post robot-assisted exenteration for locally advanced sigmoid colon cancer treated with neoadjuvant chemotherapy, a pelvic abscess from anastomotic dehiscence was identified. Initial CT-guided drainage and subsequent laparoscopic drainage were performed. On postoperative day 22, a bleeding left internal iliac pseudoaneurysm required embolization. Despite these efforts, the sepsis worsened due to an enlarged, infected hematoma. Endoscopic lavage, in collaboration with skilled endoscopists, successfully removed the hematoma, leading to an improved inflammatory response, and the patient was discharged. Endoscopic lavage proved to be the safest and most effective treatment for pelvic sepsis with an infected hematoma after various attempted interventions.

Evolving Trends in the Management of Duodenal Leaks After Pancreas Transplantation: A Single-Centre Experience

Duodenal leaks (DL) contribute to most graft losses following pancreas transplantation. However, there is a paucity of literature comparing graft preservation approach versus upfront graft pancreatectomy in these patients. We reviewed all pancreas transplants performed in our institution between 2000 and 2020 and identified the recipients developing DL to compare based on their management: percutaneous drainage vs. operative graft preservation vs. upfront pancreatectomy. Of the 595 patients undergoing pancreas transplantation, 74 (12.4%) developed a duodenal leak with a median follow up of 108 months. Forty-five (61%) were managed by graft preservation strategies, with the rest being treated with upfront graft pancreatectomy. DL managed by graft preservation strategies had similar graft survival rates at 1 and 5-year compared to the matched cohort of population without DL (95% and 59% vs. 91% and 62%; p = 0.78). Multivariate analysis identified male recipient (OR: OR: 6.18; CI95%: 1.26-41.09; p = 0.04) to have higher odds of undergoing an upfront graft pancreatectomy. In appropriately selected recipients with DL, graft preservation strategies utilizing either interventional radiology guided percutaneous drainage or laparotomy with/without repair of leak can achieve comparable long-term graft survival rates compared to recipients without DL.

Successful Management of Ileorectal Anastomotic Disruption With Off-Label Use of Endoscopic Covered Metallic Stent

Colorectal surgery poses significant risks, with anastomotic disruption being a severe complication. Traditional management involves surgical intervention, contributing to postoperative morbidity and mortality. In this brief report, we present a 54-year-old woman with a history of diverticulitis, multiple surgeries, and anastomotic leak following ileorectal anastomosis. Attempts at managing anastomotic leaks with more minimally invasive approaches have been successful in esophageal surgery with the use of covered metallic stents. However, this approach has been rarely attempted for the management of colorectal anastomotic leaks. Instead of conventional surgical approaches, we employed an off-label use of an endoscopic covered metallic stent, WallFlex™, to successfully manage the anastomotic disruption. The patient's recovery was uneventful, highlighting the potential role of stents in select cases.

Endoluminal Vacuum Therapy as Effective Treatment for Patients with Postoperative Leakage After Metabolic Bariatric Surgery-A Single-Center Experience

BACKGROUND

Metabolic bariatric surgery (MBS) is standardized and safe. Nevertheless, complications such as anastomotic leakage (AL) or staple-line leakage (SLL) can occur. In upper GI or colorectal surgery, endoluminal vacuum therapy (EVT) offers a therapeutic alternative to revisional surgery. Data on EVT in patients with leakage after MBS remain scarce. The aim of this study is to evaluate the efficacy of EVT and its potential as endoscopic alternative to revisional surgery.

MATERIAL AND METHODS

All patients treated for AL or SLL with EVT after MBS between 01/2016 and 08/2023 at the Department for General Surgery, Medical University Vienna, were included in this retrospective, single-center study. Therapeutic value of EVT as management option for acute postoperative leakage after MBS in daily practice was evaluated. Statistical analyses were performed descriptively.

RESULTS

Twenty-one patients were treated with EVT within the observational period of 7 years. In 11 cases (52.4%), the index surgery was a primary bariatric intervention; in 10 cases (47.6%), a secondary surgery after initial MBS was performed. Favored approach was a combination of revisional surgery and EVT (n = 18; 85.7%), intermediate self-expanding metal stent (SEMS) in 16 (76.2%) cases. EVT was changed six times (0-33) every 3-4 days. Mean EVT time was 25.1 days (3-97). No severe associated complications were detected and EVT showed an efficacy of 95.2%.

CONCLUSION

This small case series supports the trend to establish EVT in daily clinical practice when revisional surgery after MBS is needed, thus preventing further reoperation and reducing associated morbidity and mortality in critically ill patients.

The pivotal role of negative pressure wound therapy in the management of enteroatmospheric fistula: a year-long "obstacle marathon"

BACKGROUND

Enteroatmospheric fistula (EAF) is an abnormal communication between the gastrointestinal tract and the atmosphere. This phenomenon is still considered one of the most significant challenges faced by general surgeons after abdominal surgery. Primary goals of managing EAF include controlling and diverting intestinal contents outside the abdominal cavity, protecting surrounding tissues from retraction, and promoting wound healing. Achieving these goals is not easy. EAF has a 40% mortality rate. Several techniques have been proposed for managing this problem, including negative pressure wound therapy. The use of bladder catheters, nipples, endoscopic stents, vascular grafts, and fistula funnel, among other options, in the management of EAF has also been described.

CASE REPORT

The patient in the current report underwent Hartmann reversal surgery. On postoperative day (POD) 5, he had an anastomotic leak with ischemia of the descending colon and the transverse colon. Resection of the ischemic colon was performed, followed by creation of a terminal ileostomy on the last ileal loop on the right side. The first small orifice of EAF appeared on POD 23, the second on POD 28, and the third on POD 45. On POD 253, the patient underwent resection of the fistulated loop, extensive vitreolysis of the entire small intestine, and mechanical jejunojejunal laterolateral anastomosis to reestablish the canalization toward the previous terminal ileostomy on the right side. Complete closure of the skin was evident on POD 358.

CONCLUSION

There is no ideal treatment approach that is valid for all cases of EAF. Spontaneous closure of an EAF is unlikely but feasible in the setting of a single, deep lesion with limited output and when intestinal continuity is preserved.

Treatment of anastomotic leakage following Ivor Lewis esophagectomy-10 year experience from a Nordic center

Anastomotic leakage (AL) is a dreaded complication following esophageal resection. No clear consensus exist for the optimal handling of this severe complication. The aim of this study was to describe the treatment outcome following AL. We conducted a retrospective cross-sectional study including all patients with AL operated with Ivor Lewis esophagectomy from 2010 to 2021 at Oslo University Hospital, Norway. 74/526 (14%) patients had AL. Patient outcomes were analyzed and categorized according to main AL treatment strategy; stent (54%), endoscopic vacuum therapy and stent (EVT + stent) (19%), nasogastric tube and antibiotics (conservative) (16%), EVT (8%) and by other endoscopic means (other) (3%). One patient had surgical debridement of the chest cavity. In 66 patients (89%), the perforation healed after median 27 (range: 4-174) days. Airway fistulation was observed in 11 patients (15%). Leak severity (ECCG) was associated with development of airway fistula (P = 0.03). The median hospital and intensive care unit stays were 30 (range: 12-285) and 9 (range: 0-60) days. The 90-days mortality among patients with AL was 5% and at follow up, 13% of all deaths were related to AL. AL closure rates were comparable across the groups, but longer in the EVT + stent group (55 days vs. 29.5 days, P = 0.04). Thirty-two percent developed a symptomatic anastomotic stricture within 12 months. Conclusion: The majority of AL can be treated endoscopically with preservation of the conduit and the anastomosis. We observed a high number of AL-associated airway fistulas.

Endoluminal Vacuum Therapy Using a New "Fistula Sponge" in Treating Defects of the Upper Gastrointestinal Tract-A Comparative, Retrospective Cohort Study

Background and Objectives: Anastomotic insufficiencies (AI) and perforations of the upper gastrointestinal tract (uGIT) result in high morbidity and mortality. Endoscopic stent placement and endoluminal vacuum therapy (EVT) have been established as surgical revision treatment options. The Eso-Sponge® is the only licensed EVT system with limitations in treating small defects (<10 mm). Therefore, a fistula sponge (FS) was developed for the treatment of such defects as a new therapeutic approach. The aim of this study was to evaluate both EVT options' indications, success rates, and complications in a retrospective, comparative approach. Materials and Methods: Between 01/2018 and 01/2021, the clinical data of patients undergoing FS-EVT or conventional EVT (cEVT; Eso-Sponge®, Braun Melsungen, Melsungen, Germany) due to AI/perforation of the uGIT were recorded. Indication, diameter of leakage, therapeutic success, and complications during the procedure were assessed. FSs were prepared using a nasogastric tube and a porous drainage film (Suprasorb® CNP, Lohmann & Rauscher, Rengsdorf, Germany) sutured to the distal tip. Results: A total of 72 patients were included (20 FS-EVT; 52 cEVT). FS-EVT was performed in 60% suffering from AI (cEVT = 68%) and 40% from perforation (cEVT = 32%; p > 0.05). FS-EVT's duration was significantly shorter than cEVT (7.6 ± 12.0 d vs. 15.1 ± 14.3 d; p = 0.014). The mean diameter of the defect was 9 mm in the FS-EVT group compared to 24 mm in cEVT (p < 0.001). Therapeutic success was achieved in 90% (FS-EVT) and 91% (cEVT; p > 0.05). Conclusions: EVT comprises an efficient treatment option for transmural defects of the uGIT. In daily clinical practice, fistulas < 10 mm with large abscess formations poses a special challenge since intraluminal cEVT usually is ineffective. In these cases, the concept of extraluminal FS placement is safe and effective.

Management of esophageal anastomotic leaks, a systematic review and network meta-analysis

There is currently no consensus as to how to manage esophageal anastomotic leaks. Intervention with endoscopic vacuum-assisted closure (EVAC), stenting, reoperation, and conservative management have all been mooted as potential options. To conduct a systematic review and network meta-analysis (NMA) to evaluate the optimal management strategy for esophageal anastomotic leaks. A systematic review was performed as per the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines with extension for NMA. NMA was performed using R packages and Shiny. In total, 12 retrospective studies were included, which included 511 patients. Of the 449 patients for whom data regarding sex was available, 371 (82.6%) were male, 78 (17.4%) were female. The average age of patients was 62.6 years (standard deviation 10.2). The stenting cohort included 245 (47.9%) patients. The EVAC cohort included 123 (24.1%) patients. The conservative cohort included 87 (17.0%) patients. The reoperation cohort included 56 (10.9%) patients. EVAC had a significantly decreased complication rate compared to stenting (odds ratio 0.23 95%, confidence interval [CI] 0.09;0.58). EVAC had a significantly lower mortality rate than stenting (odds ratio 0.43, 95% CI 0.21; 0.87). Reoperation was used in significantly larger leaks than stenting (mean difference 14.66, 95% CI 4.61;24.70). The growing use of EVAC as a first-line intervention in esophageal anastomotic leaks should continue given its proven effectiveness and significant reduction in both complication and mortality rates. Surgical management is often necessary for significantly larger leaks and will likely remain an effective option in uncontained leaks with systemic features.

Multicenter study on the incidence and treatment of mediastinal leaks after esophagectomy (MuMeLe 2)

BACKGROUND

Management of mediastinal anastomotic leaks (MALs) after Ivor Lewis esophagectomy includes conservative, endoscopic, or surgical management. Endoscopic vacuum therapy (EVAC) is becoming a routine approach for MALs, although the outcomes have not been defined. This study aimed to describe the incidence, treatment, and outcomes of MALs in patients who underwent esophagectomy in 3 Italian high-volume centers that routinely use EVAC for MAL.

METHODS

Patients who underwent Ivor Lewis esophagectomy between September 2018 and March 2023 were included.

RESULTS

A total of 681 patients underwent Ivor Lewis esophagectomy, of whom 88 had MAL. The MAL rates for open, minimally invasive, and robotic esophagectomies were 11.5%, 13.4%, and 14.8%, respectively. Global and specific 30- and 90-day mortality rates for MAL were 0.9% and 2.1% and 6.8% and 15.9%, respectively. Nonoperative management (NOM) as the primary treatment was chosen for 62 patients. EVAC was the most common NOM (62.9%), and the most common operative management (OM) was anastomotic redo (53.8%). Diversion was the OM for 7 patients, of whom 3 patients died. Primary treatment proved successful in 40 patients. Among them, EVAC alone was successful in 35.9% of patients. Globally, endoscopic treatment, including EVAC, was successful in 79.0% of NOM and 55.7% of MALs. NOM and OM were chosen as secondary treatments for 27 and 10 patients, respectively. Secondary treatment proved successful in 21 patients.

CONCLUSION

The incidence of MALs after Ivor Lewis esophagectomy is approximately 13%. Endoscopic techniques have a success rate of almost 80%, with EVAC representing a significant part of this treatment process.

Biliary Leaks: Multidisciplinary Approach to Diagnosis and Treatment

Bile leaks arise from various causes such as trauma, complications after hepatobiliary surgery, and intrahepatic malignancies or their associated liver-directed treatments. Bile leaks can result in significant morbidity and mortality. Delayed diagnosis is not uncommon due to nonspecific manifestations; therefore, a high clinical suspicion is needed. A multidisciplinary approach for treatment of biliary leaks with prompt referral to tertiary care centers with experienced hepatobiliary surgeons, advanced endoscopists, and interventional radiologists is needed to address these challenging complications. Management of biliary leaks can range from conservative management to open surgical repair. Minimally invasive procedures play a crucial role in biliary leak treatment, and the interventional radiologist can help guide appropriate management on the basis of a clear understanding of the pathophysiology of biliary leaks and a current knowledge of the armamentarium of treatment options. In most cases, a simple diversion of bile to decompress the biliary system may prove effective. However, persistent and high-output biliary leaks require delineation of the source with tailored treatment options to control the leak. This may be done by additional diversions, occluding the source, reestablishing connections, or using a combination of therapies to bridge to more definitive surgical interventions. The authors describe the different treatment options and emphasize the role of interventional radiology. ©RSNA, 2024.

Considerations in case of suspected anastomotic leakage in the lower GI tract

Colorectal anastomotic leakage (CAL) remains a feared complication after colorectal surgery and requires prompt detection and proper treatment. With the upswing of fast-track recovery programs in recent years this challenge has increased, as clinical features may only arise after discharge. Therefore, identification of the best diagnostic tools is of utmost importance, also since early treatment is associated with high success rates. Diagnostic tools range from general screening tools to invasive procedures to assess the severity of the leak. Laboratory tests, in particular the inflammation biomarkers C-reactive protein and procalcitonin, have a significant role in the detection of CAL after colorectal surgery. As these biomarkers are unspecific for CAL, additional imaging should be performed when blood levels are elevated. The golden standard for the detection of AL after colonic resections is a computed tomography (CT-scan). If tolerated, a contrast medium should be administered rectally to enhance diagnostic accuracy. When suspicion of CAL remains high despite negative previous tests, further endoscopy examination should be conducted. However, endoscopic examinations become more suitable for the early diagnostic work-up after rectal resections. This review aims to provide an overview of current diagnostics for the screening and assessment of the severity of CAL after colorectal surgery.

Diagnosis and treatment of primary ileal pouch leaks: a 27-year experience at a referral center

BACKGROUND

Ileal pouch-anal anastomosis (IPAA) is considered the preferred restorative surgical procedure for patients with ulcerative colitis and familial adenomatous polyposis requiring proctocolectomy. Unfortunately, postoperative leaks remain a complication with potentially significant ramifications. This study aimed to provide a comprehensive description of the evaluation, management, and outcomes of leaks after primary IPAA procedures.

METHODS

Between 1995 and 2022, a total of 4058 primary IPAA procedures were performed at Cleveland Clinic. From a prospectively maintained pouch registry, we retrospectively reviewed the data of 237 patients who presented to the pouch center for management. Of these, 114 (3%) had undergone the index IPAA procedure at our clinic (de novo cases), whereas 123 patients had their index IPAA performed elsewhere. Data were missing for 43 patients, resulting in a final cohort of 194 patients.

RESULTS

Our cohort had an average age of 41 years (range, 16-76) at the time of leak diagnosis. Overall, 55.2% were males, average body mass index was 24.4 kg/m2, and pain was the most prevalent presenting symptom (61.8%), followed by fever (34%). Leaks were confirmed through diagnostic testing in 141 cases, whereas 27.3% were detected intraoperatively. The most common initial diagnoses were pelvic abscess (47.4%) and enteric fistulas (26.8%), including cutaneous (9.8%), vaginal (7.2%), and bladder fistulas (3.1%). By location, leaks occurred at the tip of the "J" (52.6%), at the pouch-anal anastomotic site (35%), and in the body of the pouch (12.4%). A nonoperative management approach was initially attempted in 49.5% of cases, including antibiotic therapy, drainage, endoclip, and endo-sponge, with a success rate of 18.5%. Surgery was eventually required in 81.4% of patients, including (1) sutured or stapled pouch repair (52.5%), with diversion performed in 87.9% of these cases either before or during the salvage surgery; (2) pouch excision with neo-IPAA (22.7%), including 9 patients from the first group; and (3) pouch disconnection, repair, and reanastomosis (9.3%). Pouch failure occurred in 8.4%, with either pouch excision (11.1%) or permanent diversion (4.5%). Ultimately, 12.4% of patients (24 of 194) required permanent diversion, with all necessitating pouch excision. In the 30-day follow-up after salvage surgery, short-term complications arose in 38.7% of patients. The most common complications observed were ileus, pelvic abscess/sepsis, and fever.

CONCLUSION

Leaks after primary IPAA procedures represent an infrequent, yet challenging, complication. Despite attempts at nonoperative management, the success rate is limited. Salvage surgery is associated with a high pouch retention rate, underscoring its importance in the management of post-IPAA leaks.

Multi-modality management of defects in the gastrointestinal tract: Where the endoscope meets the scalpel: Endoscopic vacuum therapy in the upper gastrointestinal tract

BACKGROUND

Transmural defects in the upper gastrointestinal (GI) tract, such as anastomotic leakage and oesophageal perforations, are associated with significant morbidity and mortality risks. Endoscopic vacuum therapy (EVT) is an efficient and safe treatment option for these patients. With the growing use of EVT in the upper GI tract, it is important to share expertise on the topic.

AIM

This review explores the emerging role of endoscopic vacuum therapy (EVT) as treatment for transmural defects in the upper GI tract. An overview of the mechanism and procedures, outcomes in current literature and challenges of implementation and application are discussed.

CONCLUSION

EVT exhibits great efficacy and safety for the treatment of transmural defects in the upper GI tract. Current use of EVT is mostly experience-based, emphasizing the importance of sharing expertise and performing research to unlock its full potential.

Applications of endoscopic vacuum therapy in the lower gastrointestinal tract: Tips and tricks and a review of the literature

Endoscopic vacuum therapy (EVT) is an established technique for the treatment of rectal wall defects and especially anastomotic leaks. A wide range of EVT devices, both handmade and commercially available, allow for their successful placement even in small defects and difficult localizations. Reported success rates range between 85 and 97 %, while periintervenional morbidity is low and major adverse events are very rare. EVT has proven its effectiveness in the lower gastrointestinal tract and is now considered first line treatment for pelvic anastomotic leaks. This narrative review summarizes the current literature on EVT in the lower gastrointestinal tract, focusing on its indications, technical aspects and results, and offers tips and tricks for its clinical applications.

Diagnosis and Treatment of Pouch Disorders in Children: A Systematic Review

BACKGROUND

Restorative proctocolectomy and IPAA have become the surgical procedure of choice in pediatric patients with medically refractory colitis or familial adenomatous polyposis.

OBJECTIVE

This systematic review aims to assess the diagnosis and treatment of pouch disorders in pediatric patients who undergo IPAA.

DATA SOURCES

A literature search was performed using MEDLINE, Google Scholar, and Embase for all publications describing outcomes of pediatric IPAA.

STUDY SELECTION

Studies between January 1, 2000, and September 7, 2022, published in English were included. Studies were excluded on the basis of title, abstract, and full-length review.

INTERVENTIONS

IPAA.

MAIN OUTCOME MEASURES

Pouch disorders described include anastomotic leaks, pouch strictures, pouch failure, pouchitis, cuffitis, and de novo Crohn's disease of the pouch.

RESULTS

Thirty-three studies were included in this review, all of which were retrospective in nature. The outcomes of 2643 pediatric patients were included in the 33 studies.

LIMITATIONS

Management is largely informed by clinical practices in adult patients with scant data on treatment efficacy in children.

CONCLUSIONS

The reported incidence of disorders of the pouch in children varies widely and is likely attributable to differences in definitions and follow-up periods across studies. Pouchitis was the most frequently described outcome. The overall rate of pouch failure in children is relatively low, with de novo Crohn's disease of the pouch being the most significant risk factor. Multicenter prospective studies are needed in the pediatric population to accurately identify risk factors, standardize the assessment of pouch complications, and determine effective treatment strategies. See video from the symposium .

Navigating complexities and considerations for suspected anastomotic leakage in the upper gastrointestinal tract: A state of the art review

This state-of-the-art review explores the intricacies of anastomotic leaks following oesophagectomy and gastrectomy, crucial surgeries for globally increasing esophageal and gastric cancers. Despite advancements, anastomotic leaks occur in up to 30 % and 10 % of oesophagectomy and gastrectomy cases, respectively, leading to prolonged hospital stays, substantial impact upon short- and long-term health-related quality of life and greater mortality. Recognising factors contributing to leaks, including patient characteristics and surgical techniques, are vital for preoperative risk stratification. Diagnosis is challenging, involving clinical signs, biochemical markers, and various imaging modalities. Management strategies range from non-invasive approaches, including antibiotic therapy and nutritional support, to endoscopic interventions such as stent placement and emerging vacuum-assisted closure devices, and surgical interventions, necessitating timely recognition and tailored interventions. A step-up approach, beginning non-invasively and progressing based on treatment success, is more commonly advocated. This comprehensive review highlights the absence of standardised treatment algorithms, emphasizing the importance of individualised patient-specific management.

Anastomotic leaks and the relationship with anastomotic strictures after esophageal atresia surgery; effects of patient characteristics

BACKGROUND

This study aimed to evaluate the link between anastomotic leaks (AL) and anastomotic strictures (AS) after esophageal atresia surgery and the influence of patient demographics.

MATERIALS AND METHODS

The clinical data of neonates who underwent surgical repair for esophageal atresia were retrospectively reviewed. The results of AL treatment and the relationship with AS, also the effects of patient characteristics were examined with logistic regression analysis.

RESULTS

Primary repair was performed on 122 of 125 patients who underwent surgery for esophageal atresia. AL occurred in 25 patients and 21 were treated non-operatively. While 4 patients were re-operated, AL recurred in 3 and led to the death of one. There was no correlation between the development of AL and sex or the presence of additional anomalies. The gestational age and birth weight of patients with AL were significantly higher than those of patients without. AS developed in 45 patients. The mean gestational age was significantly higher in patients who developed AS (p < .001). While the development of AS was significantly higher in patients with AL (p = .001), the number of dilatation sessions needed was also significantly higher in these patients (p = .026). Complications related to anastomosis were less common in patients whose gestational age was ≤33 weeks.

CONCLUSION

Non-operative treatment remains effective for AL after esophageal atresia surgery. AL increases the risk of developing AS and significantly increases the number of dilatation sessions needed. Anastomotic complications are less common in patients with lower gestational age.NOVEL ASPECTSGestational age and birth weight were found to be significantly higher in patients with anastomotic leaks than in those without and fewer anastomotic complications were encountered in patients whose gestational age was ≤ 33 weeks.Anastomotic stricture development was significantly higher in patients with anastomotic leaks and the number of dilatation sessions needed for treatment was also significantly higher in these patients.