bluuebunny/crossref_metadata_2025_split huggingface dataset:
225. LONG-TERM ONCOLOGIC OUTCOMES OF ROBOT-ASSISTED VERSUS CONVENTIONAL OPEN ESOPHAGECTOMY FOR ESOPHAGEAL CANCER: PROPENSITY-SCORE MATCHED ANAYLSIS
Authors: Kwon Yelee , Yun Jae Kwang , Jeon Yun-Ho , Lee Han Pil , Kim Yong-Hee 
Published: September 2024

Abstract

Background
This study aimed to compare the long-term oncologic outcomes of robot-assisted minimally invasive esophagectomy (RAMIE) with those of conventional open esophagectomy (OE) for esophageal cancer.

Methods
Between January 2006 and December 2021, 1,745 consecutive patients underwent esophagectomy for esophageal cancer at our institution. Among them, we retrieved 1,133 patients (mean age 63.1±7.8 years, 86 [7.6%] women, 1,100 [97.1%] squamous cell carcinomas), who were operated by a single surgeon. These patients were categorized into following two groups based on their surgical approaches: RAMIE (n = 497) and OE (n = 636). The RAMIE and OE groups were matched in a 1:1 ratio using propensity scores.

Results
Median follow-up was 51.8 months. Five-year overall survival (OS, 70.7% vs. 55.0%) and recurrence-free survival (RFS, 63.3% vs. 50.1%) rates were significantly higher in RAMIE than in OE group (P &lt; 0.01).
Following propensity-score matching, 886 patients (443 pairs) were successfully matched, demonstrating no significant intergroup differences. The RAMIE group consistently demonstrated enhanced OS (70.4% vs. 61.8%, P &lt; 0.01) and RFS (62.8% vs. 55.8%, P=0.04) after five years, even after adjustment (Figure). The rate of noncancer mortality was significantly higher in the OE group (P &lt; 0.01), whereas the esophageal cancer-related mortality showed no significant differences (P = 0.25).

Conclusions
RAMIE could be a safer and more feasible option for patients compared with conventional open esophagectomy with favorable long-term oncologic outcomes.
234. EFFECTS OF TRANSCUTANEOUS ELECTRICAL STIMULATION SYSTEM ON HEARTBURN, REGURGITATION AND ESOPHAGEAL ACID EXPOSURE IN GERD PATIENTS
Authors: Dickman Ram , Gingold-Belfer Rachel , Boltin Doron , Brun Rita , Levy Sigal , Ron Yishai , Rainis Tova , Naftali Timna , Fass Ronnie , Hazani-Pauker Maor 
Published: September 2024

Abstract

Background
Chronic PPI treatment in GERD is associated with high failure rate and concerns regarding PPI's side effects. In a previously published proof of concept study, a non-pharmacological, non-invasive transcutaneous, electrical stimulation system, reduced esophageal acid exposure in GERD patients unresponsive to standard dose PPI. However, in that study, a symptomatic response to electrical stimulation was not assessed.

Aim
To determine the effect of a transcutaneous electrical stimulation system (TESS) on symptoms (heartburn and regurgitation) and the percentage of esophageal acid exposure time in GERD patients.

Methods
Patients suffering from heartburn and regurgitation were recruited into this multicenter study. The first phase of this study was a one week, run-in period, off-PPI's, during which, patients completed symptoms diaries and demographic questionnaires. Thereafter, all patients underwent upper endoscopy with subsequently wireless esophageal pH capsule placement (off PPI). Based on pH analysis in the first 24-hours, (day 0) only those with increased acid exposure time (percent total time pH &lt;4 above 6%) continued to the next phase. During phase two of the study, patients were treated for two weeks with TESS and documented their symptoms.
Primary end points included the reduction of baseline (pretreatment) number of heartburn and regurgitation episodes as well as 24-hour percent total time pH &lt;4 and/or DeMeester score by at least 50%.

Results
26 GERD patients (16 male, aged 47±15 years, mean BMI 25±3 kg/m2) completed the study. At baseline, mean number of daily heartburn and regurgitation events was 2.41±0.36 and 1.38±0.35, respectively. Following TESS, mean number of daily heartburn and regurgitation events dropped to 0.69±0.16 and 0.31±0.19, respectively (p=0.01). At baseline, mean percent total time pH &lt; 4 was 11.8±0.9. Following TESS, mean percent total time pH &lt; 4 dropped to 7.3±0.8, 7.8±1.0, 6.7±1.1 and 5.0±0.7 for day 1, 2, 3 and 4, respectively (p=0.01). At baseline, mean DeMeester score was 31.4±2.1. Following TESS, mean DeMeester score dropped to 20.1±2.0, 20.4±2.5, 17.3±2.6 and 14.3±2.0 for day 1, 2, 3 and 4, respectively (p=0.01).

Conclusions
TESS is effective in reducing both symptoms (heartburn and regurgitation) and esophageal acid exposure time in GERD patients.
240. CACHEXIA INDEX AS A POTENTIAL BIOMARKER FOR SENSITIVITY OF NEOADJUVANT THERAPY AND PROGNOSIS IN ESOPHAGEAL SQUAMOUS CELL CARCINOMA
Authors: Fang Pinhao , Zhou Jianfeng , Yuan Yong 
Published: September 2024

Abstract

Background
Cancer cachexia has a negative impact on the clinical outcome of patients with esophageal squamous cell carcinoma (ESCC). The cachexia index (CXI) is a potential biomarker for cancer cachexia, whereas its implications for ESCC prognosis and treatment outcomes have not been investigated.

Methods
In our study, 454 ESCC patients who had neoadjuvant therapy followed by surgery were included. Based on the exclusion criteria, a total of 224 patients were finally enrolled in this study. The CXI was determined as the serum albumin/neutrophil-lymphocyte ratio × the skeletal muscle index (based on CT image), which was classified as L3-CXI or pectoralis muscles-CXI depending upon the type of muscle involved. The patients were divided into high- and low-CXI groups using sex-specific medians as cutoff values for CXI.

Results
Tumor regression grade = 0,1 (sensitive to treatment) to neoadjuvant therapy was obtained in 61.6% and 46.4% of patients in the high-pretreatment L3-CXI and low-pretreatment L3-CXI groups, respectively (P = 0.023). ESCC patients with △L3-CXI &lt;0 (L3-CXI decreased during treatment) had significantly shorter overall survival (P = 0.006) and disease-free survival (P = 0.002) than those with △L3-CXI ≥0. Multivariable analysis showed that △L3-CXI &lt;0 was an independent negative prognostic factor for overall survival and disease-free survival.

Conclusions
In patients with ESCC, pretreatment CXI is a biomarker for treatment response, and △CXI can predict postoperative complications and survival outcomes. Patients could be clearly stratified by pretreatment CXI and △CXI categories, which provides a new nutritional assessment tool for clinical decision-making for patients with ESCC.
243. IS MUCOSAL CHANGE IN COELIAC DISEASE RESTRICTED TO SMALL BOWEL? STUDY OF OESOPHAGEAL MUCOSAL CHANGES IN CHILDREN WITH COELIAC DISEASE
Authors: Prasad Kaushal Kishor , Lal Sadhna Bhasin 
Published: September 2024

Abstract

Introduction
Celiac disease (CeD) may cause changes throughout the gastrointestinal tract. It is not known whether the oesophageal mucosa is involved in CeD. The purpose of this prospective study was to study the mucosal changes in oesophagus in children with CeD.

Materials & Methods
The mucosal changes in the esophagus was prospectively investigated in 126 children with CeD during 192 upper GI endoscopies performed to obtain duodenal biopsy specimens and was compared with findings in 49 children who underwent endoscopy for upper GI complaints without CeD (non-CeD patients) during one year. Children were diagnosed as cases of CeD based on the modified ESPGHAN criteria and positive serology. Duodenal histologic lesions were classified as proposed by our group.

Results
The mean age of CeD children (M:F::71:55) at presentation was 6.7 + 3.3 years. 54/126 (42.9%) of CeD and 23/49 (46.9%) of non-CeD patients showed normal oesophageal mucosa. The prevalence of lymphocytic oesophagitis (LyE) was higher in CeD (11.9%) than non-CeD (2.1%) patients. The prevalence of oeosinophilic oesophagitis, follicular oesophagitis, reflux oesophagitis and non-specific oesophageal mucosal changes were similar in both groups. All but one child with LyE showed classic duodenal histologic lesion.

Conclusions
Our findings showed that the oesophageal mucosa can be damaged in CeD patients and that the prevalence of LyE is higher with CeD. Awareness of potential coexistence of oesophageal lesions in CeD should promote optimal diagnosis of these conditions. Routine oesophageal biopsies may be warranted when investigating for CeD.
256. PROGNOSIS AND RISK FACTORS FOR SUPRACLAVICULAR LYMPH NODE METASTASIS IN PATIENTS WITH MIDDLE AND LOWER THORACIC ESOPHAGEAL CANCER
Authors: Shiraishi Osamu , Hagi Takaomi , Hiraki Yoko , Kato Hiroaki , Yasuda Atsushi , Shinkai Masayuki , Imano Motohiro , Yasuda Takushi 
Published: September 2024

Abstract

Background
Whether supraclavicular lymph node metastases (#104 LNM) in patients with thoracic esophageal cancer are classified as distant or regional metastases differs between Western countries and East Asia. Therefore, in Japan, 3FL is a standard procedure, but in Western countries, 3FL may be rarely practiced. We aimed to determine the frequency and prognosis of #104 LNM compared with other regional LN stations and to identify risk factors for #104 LNM in patients with advanced thoracic esophageal cancer to investigate value of treatment of #104 LNM.

Methods
The study cohort of 567 eligible patients with esophageal cancer had undergone subtotal esophagectomy radically from 2003 to 2020. LN metastasis was defined as pathologically proven metastasis or positron emission tomography positive LNs. The effectiveness of LN dissection was assessed using an efficacy index (EI) that we calculated by multiplying the rate of metastasis (%) to each LN station by the 5-year overall survival (OS) rate of each patient and then dividing by 100. In order to clarify the indication for 3FL, risk factors for #104 LNM were determined by multivariable logistic regression.

Results
Among of 567 patients, 66 (11.6%) had #104 LNM. #104 LNM occurred in 31.7%, 10.7%, and 5.6% of patients with upper, middle, and lower thoracic lesions respectively. All patients had squamous cell carcinoma. Neoadjuvant chemotherapy was administered to 71% of patients, and chemo-radiation to 11%. The 5-year OS was 45.8%. The EI for #104 LNs (5.3) was like that for #101 LNs. Risk factors were age &lt;65 years, upper lesion, clinical stage N2–3, and #101/106rec LNM. When assessing only middle and lower lesions, the 5-year OS of patients was 38% (EI 3.1), similar to that for #101 and #8/9/11 LNs, with similar risk factors to overall population.

Conclusions
The EI of patients with #104 LNM was similar to that of patients with other regional LNM such as #101 and #8/9/11 LNs, Therefore, patients with #104LNM were worth treated LN dissection. However, we recommend 3FL exclusively for patients with #104 LNM or those at high risk of metastasis due to the overall metastatic rate not being high.
258. SHORT-TERM OUTCOMES AFTER ESOPHAGECTOMY ANALYZED USING NATIONAL CLINICAL DATABASE IN JAPAN
Authors: Kakeji Yoshihiro , Watanabe Masayuki , Kono Koji , Ueno Hideki , Doki Yuichiro , Kitagawa Yuko , Takeuchi Hiroya , Shirabe Ken , Seto Yasuyuki 
Published: September 2024

Abstract
Esophagectomy for esophageal cancer is a highly invasive procedure in gastrointestinal surgery. The National Clinical Database (NCD) of Japan starting data collection in 2011 has accumulated real world data of esophagectomy, one of the main nine gastroenterological surgeries for which detailed input items have been required for the evaluation of surgical mortality and postoperative complications. We herein reviewed the short-term outcomes after esophagectomy analyzed by Japanese nationwide big database. Many studies on esophagectomy, including investigations of quality indicators, feasibility of minimally invasive surgery, and various patients’ conditions, have been conducted using NCD. The validation of certification systems by the Japanese Society of Gastroenterological Surgery (JSGS) and the Japan Esophageal Society (JES) revealed that the institute’s certification had greater influence on short-term surgical outcomes than the operating surgeon’s certification. Minimally invasive esophagectomy (MIE) can replace open esophagectomy (OE). MIE performed with no preoperative treatment was associated with significantly less incidence of any pulmonary morbidities, prolonged ventilation 48hours, unplanned intubation, surgical site infection, and sepsis. The total surgery-related mortality rates of MIE and OE were 1.7% and 2.4%, respectively (P &lt; 0.001). The operative mortality in the elderly group with residual tumors increased to more than twice than that in the non-elderly groups (15.9 vs. 5.5 or 6.5%) and was much higher than that in elderly patients without residual tumors (15.9 vs. 4.6%). Careful selection is important for the treatment of elderly patients with highly advanced tumors to avoid unfavorable short-term outcomes. Thus, the NCD has contributed to quality assessment and improvement of surgery by feedback of accurate data in Japan.
264. SIGNIFICANCE AND USEFULNESS OF PLASMA SUBSTANCE P CONCENTRATION IN PREDICTING HIGH-RISK PATIENTS FOR ASPIRATION AFTER ESOPHAGEAL CANCER SURGERY
Authors: Yasuda Takushi , Kato Hiroaki , Shiraishi Osamu , Hiraki Yoko , Hagi Takaomi , Koda Masashi , Nakanishi Tomoya , Yasuda Atsushi , Shinkai Masayuki , Imao Motohiro 
Published: September 2024

Abstract

Background
The greatest challenge in postoperative complications of esophageal cancer is the prevention of pulmonary complications, especially aspiration pneumonia. Although the introduction of minimally invasive surgery and intervention in breathing and swallowing rehabilitation can improve the motor function of breathing and swallowing, we reported the possibility that a decline in the swallowing reflex may play a significant role in esophageal cancer patients, many of whom are elderly. In fact, about 80% of esophageal cancer patients in Japan are over 60 years old, and 53% of them have asymptomatic cerebral infarction, about half of which are reported to be found near the basal ganglia, which control the swallowing reflex. The swallowing reflex is controlled by the secretion of substance P, synthesized in the cervical sympathetic ganglia, into the pharynx and trachea upon stimulation of dopamine synthesized in the basal ganglia.

Methods
To test the hypothesis that patients with preoperative subclinical cerebral infarction are more likely to develop aspiration postoperatively due to decreased substance P secretion. To compare the association between the presence or absence of cerebral infarction near the basal ganglia and serum substance P levels and the development of postoperative aspiration or aspiration pneumonia due to videoendoscopy and video fluorography in patients with thoracic esophageal cancer scheduled for video-assisted esophagectomy by preoperative brain MRI imaging and blood sampling.

Results
We report the results of an interim analysis of 54 cases in which the measurement of substance P was completed. Male: 39 cases, female: 15 cases. Mean age: 69.3 (49-82) years. Tumor location: Ut/Mt/Lt=13/25/14. MRI showed infarction in or near the basal ganglia in only 2 cases. Median preoperative blood substance P concentration: 48.2 pg/ml. Eleven one patients had postoperative aspiration. Preoperative substance P levels ≥48.2 pg/ml were defined as the High group, and those below 48.2 pg/ml were defined as the Low group. Postoperative aspiration was observed in 2/27 (7.4%) patients in the High group, while 9/26 (34.6%) patients in the Low group, which was significantly higher (p=0.015).

Conclusion
In fact, subclinical cerebral infarction was much less common than reported and was not useful as a predictor of postoperative aspiration. On the other hand, patients with low preoperative blood substance P levels had a very high risk of developing aspiration postoperatively due to impaired swallowing reflexes, suggesting that preoperative blood substance P levels may be useful in assessing postoperative aspiration risk in patients with thoracic esophageal cancer.
300. SURFACE MICRODIALYSIS MEASURES LOCAL TISSUE METABOLISM AFTER IVOR LEWIS ESOPHAGECTOMY; AN ATTEMPT TO PREDICT ANASTOMOTIC DEFECT
Authors: Akesson Oscar 
Published: September 2024

Abstract

Introduction
Anastomotic defect after esophagectomy can lead to severe complications with need for surgical or endoscopic intervention. Early detection enables early treatment and can limit the consequences of the anastomotic defect. As of today, there are limited methods to predict anastomotic defect. In this study we have used microdialysis to measure local metabolism at the intrathoracic anastomosis. Feasibility and possible diagnostic use were investigated.

Methods
Sixty patients planned for Ivor Lewis esophagectomy were enrolled. After construction of the anastomosis, surface microdialysis probes were attached to the outer surface of the esophageal remnant and the gastric conduit in close vicinity of the anastomosis and left in place for seven postoperative days. Continuous sampling of local tissue concentrations of metabolic substances (glucose, lactate, pyruvate) was performed postoperatively.
Outcome, defined as anastomotic defect or not according to ECCG (Esophagectomy Complications Consensus Group) definitions, was recorded at discharge or at first postoperative follow up. Difference in concentrations of metabolic substances were analysed retrospectively between the two groups by means of artificial neural network technique.

Results
Surface micodialysis probes can be attached and removed from the gastric tube reconstruction without any adverse events. Deviating metabolite concentrations on POD 1 were associated with later development of anastomotic defect. In subjects who developed anastomotic defects, no difference in metabolic concentrations between the esophageal and the gastric probe was recorded. The technical failure rate of the microdialysis probes/procedure was high.

Discussion
Surface microdialysis can be used in a clinical setting after Ivor Lewis esophagectomy. Deviation in local tissue metabolism on POD 1 seems to be associated with development of anastomotic defects. Further development of microdialysis probes and procedure is required to reduce technical failure.
320. RISK FACTORS FOR BENIGN ANASTOMOTIC STENOSIS AFTER ESOPHAGEAL CANCER SURGERY
Authors: van der Aa Dillen , Boonstra Jelle , Eshuis Wietse , Daams Freek , Gisbertz Suzanne , van Berge Henegouwen Mark 
Published: September 2024

Abstract

Background
Benign strictures occur frequently following an esophagectomy, causing dysphagia, problems with eating, and a diminished overall quality of life. The aim of this study is to identify risk factors associated with anastomotic stenosis specified for anastomotic technique following esophagectomy for cancer.

Methods
This retrospective study included patients with esophageal and gastroesophageal junction cancer who underwent esophagectomy in a tertiary referral center between 2012 and 2022. Intrathoracic and cervical anastomoses were analyzed separately. Benign anastomotic stenosis was defined as the occurrence of postoperative dysphagia for which at least 1 endoscopic anastomotic dilation was needed. Possible predictive factors for anastomotic stenosis were analyzed with uni- and multivariate logistic regression.

Results
This study included 902 patients: 605 with an intrathoracic and 297 with a cervical anastomosis. Anastomotic stenosis was observed in 18.4% and 49.8% (p&lt;0.001). Patients respectively requiring a median 4 and 7 dilations (p=0.001). Median of time to anastomotic stenosis was 99 and 78 days (p=0.001). In multivariate analysis of intrathoracic anastomosis, anastomotic leakage was a significant risk factor for stenosis (OR 2.034; 95% CI [1.116-3.708]). In patients without anastomotic leakage, stapler size 29mm was a negative predictor (OR 0.444; 95% CI [1.116-3.708]), immunosuppressants (OR 3.492; 95% CI [1.186-10.279]) and chronic pulmonary disease were significant risk factors (OR 2.717; 95% CI [1.293-5.707]). In multivariate analysis of cervical anastomosis, circular stapled anastomosis was a negative predictor (OR 0.350 95% [CI 0.188-0.652]) for stenosis.

Conclusion
This study identified the most important risk factors for anastomotic stricture after esophagectomy. Anastomotic leakage, the circular stapler diameter, and the circular stapled technique are factors that could be surgical modifiable, while patients taking immunosuppressants and with chronic pulmonary disease should be counseled for higher risk of stenosis.
325. SURGERY FOR EPIPHRENIC ESOPHAGEAL DIVERTICULUM, SHORT AND LONG TERM RESULTS
Authors: Lazar Gyorgy , Andrasi Laszlo , Paszt Attila , Simonka Zsolt , Rosztoczy Andras 
Published: September 2024

Abstract

Background and Objectives
We present our experience with laparoscopic surgery for epiphrenic oesophageal diverticulum. We wanted to assess our surgical results focusing on the patients’ quality of life. Short- and long-term results of surgical therapy were analysed.

Methods
14 patients were examined with a symptomatic causing epiphrenic diverticulum. Patients underwent complex gastroenterological examinations before and after surgery (swallowing x-ray, oesophagogastroscopy, oesophageal manometry/pH monitoring). Surgery: laparoscopic transhiatal epiphrenic diverticulectomy with Heller cardiomyotomy and Dor anterior partial fundoplication were performed in 9 patients; laparoscopic diverticulectomy in 2 patients, laparoscopic Heller-Dor operation without diverticulectomy was 1 case (small (&lt; 3cm) diverticulum) and laparoscopic diverticulectomy + Heller myotomy + Nissen fundoplication in 2 cases. Changes in quality of life with regard to symptoms related to oesophageal function were evaluated in our long-term studies (averaging 60 months, 10–138 months) by Eckardt-Zaninotto score.

Results
We had no intraoperative complication except one. In one case, a staple line leak developed (1/14 (7%), which was resolved with conservative therapy. Functional check-ups confirmed adequate oesophageal function in majority of the patients. The total symptom score for the patients was 6.3 points before surgery, and it decreased to 1.6 (P .001) after surgery, an average of 74% subjective improvement. During the follow-up period, proton pump inhibitor therapy was started in 4 patients to treat gastroesophageal reflux. In 3 cases, drug therapy was successful; in one case, Nissen antireflux surgery was performed.

Conclusion
Laparoscopic transhiatal diverticulectomy and Heller–Dor surgery are effective interventions with low morbidity. Patient quality of life significantly improves in the long term, but gastroesophageal reflux disease may occur.

Key Words
Epiphrenic oesophageal diverticulum, Laparoscopic transhiatal surgery, Long-term results