Diseases of the Esophagus最新文献

{"title":"306. TREATMENT OF ANASTOMOTIC LEAKS AFTER ESOPHAGECTOMY AND GASTRECTOMY FOR CANCER BY MEANS OF ENDOSCOPIC VACUUM THERAPY","authors":"Victor Turrado-Rodriguez, Oriol Sendino, Jordi Farguell Piulachs, Anna Curell Garcia, Ainitze Ibarzabal Olanl, Miguel Pera, Dulce Momblan Garcia","doi":"10.1093/dote/doae057.073","DOIUrl":"https://doi.org/10.1093/dote/doae057.073","url":null,"abstract":"Background Esophagectomy and gastrectomy are the cornerstones of the curative treatment of oesophageal and gastric cancer. In both techniques the risk of anastomotic leak (AL) is high, with rates of up to 21% after esophagectomy and up to 12% after gastrectomy. Mortality and morbidity are high after an AL occurs. Several treatment strategies have been developed for treatment of AL, including surgery, endoscopic stent and endoscopic vacuum therapy (EVT). The aim of this study is to analyse the treatment patterns of the patients with AL treated with EVT. Methods All patients diagnosed of gastric or oesophageal cancer with AL from January 2021 to January 2024 were included in a retrospective study. Baseline data, localization of the tumour, type of resection, type of anastomosis, total time with EVT, number of EVTs used per patient, hospital stay, Clavien-Dindo score and CCI were recorded. A descriptive analysis of the data is performed. Results All 18 patients with AL during the study period were treated with EVT. The tumour was located on the distal third of the oesophagus in 7 patients (38.9%), and stomach (27.8%). The median duration from surgery to the identification of AL was 5 days (IQR 4 – 9). The median duration of the EVT treatment was 18 days (IQR 13 – 23) with a median EVT replacement of 5.5 (IQR 4 – 7). 8 patients (44.4%) did not require ICU stay. Median time to resumption of oral intake was 34 days (IQR 26 –54). Success rate of the EVT therapy was 88.9%. Conclusions EVT is a useful tool for the treatment of AL in esophagogastric surgery. Even though the treatment may be long, it’s success rate in this series is 88.9% and it may avoid ICU stay in some cases. A close monitoring of this patients and the prompt use of additional techniques to assure source control is mandatory.","PeriodicalId":11354,"journal":{"name":"Diseases of the Esophagus","volume":"8 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142205080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"552. COMPARING ROBOTIC ESOPHAGECTOMY TO VIDEO-ASSISTED THORACOSCOPIC ESOPHAGECTOMY FOR ESOPHAGEAL SQUAMOUS CELL CARCINOMA: RESULTS FROM THE REVATE RANDOMIZED CLINICAL TRIAL","authors":"Yin-Kai Chao, Zhi-Gang Li, Hongjing Jiang, Chen-Hung Chiu, Bin Li, Xiaobin Shang","doi":"10.1093/dote/doae057.278","DOIUrl":"https://doi.org/10.1093/dote/doae057.278","url":null,"abstract":"Background The treatment of esophageal squamous cell carcinoma (ESCC) includes dissecting lymph nodes along the recurrent laryngeal nerve (RLN), which is oncologically important but is technical demanding. Vocal cord palsy as a result from RLN injury, carries significant morbidities. This randomized clinical trial (RCT) compared the efficacy and safety of robotic esophagectomy (RE) and video-assisted thoracoscopic esophagectomy (VATE) for performing RLN lymph node dissection (LND) Methods We conducted a multicenter RCT(NCT03713749) from November 2018 to March 2022, enrolling patients with ESCC who required McKeown esophagectomy. The primary endpoint was to determine the success rate of left RLN LND. Success was defined as the removal of lymph nodes confirmed by pathology, without causing permanent nerve palsy (duration > 6 months). Secondary endpoints encompassed perioperative and oncological outcomes. Results The per-protocol analysis included data from 203 patients (RE group: n=103; VATE group: n=100). The primary endpoint was achieved in 88.3% of the RE group and 69% of the VATE group (p<0.001). Additionally, the RE group had a higher mediastinal lymph node harvest (16 [12−22] versus 14 [10−20], p=0.04), shorter thoracic operating time (110 [89−137] min versus 124[103.5−154] min, p=0.004), and earlier drainage removal (4 [3−7] days versus 6 [4−9] days, p=0.007) compared to the VATE group. The two study arms exhibited comparable complication rates with no recorded in-hospital deaths in either group. Conclusion This multicenter trial demonstrates the effectiveness of RE in enhancing the feasibility and safety of RLN LND in ESCC. Additionally, RE leads to an improved mediastinal lymphadenectomy, shorter operating times, and earlier removal of drainage.","PeriodicalId":11354,"journal":{"name":"Diseases of the Esophagus","volume":"2 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"242. BRD4 INHIBITION ENHANCES THE RADIOSENSITIVITY OF ESOPHAGEAL SQUAMOUS CELL CARCINOMA THROUGH REGULATING ATF3-MEDIATED SERINE AND NUCLEOTIDE SYNTHESIS","authors":"Lei Zhao, Tiantian Gao, Zewei Zhang","doi":"10.1093/dote/doae057.026","DOIUrl":"https://doi.org/10.1093/dote/doae057.026","url":null,"abstract":"Background Radioresistance is a major culprit for radiotherapy failure in esophageal squamous cell carcinoma (ESCC). This study aimed to investigate the underlying mechanism of Brd4 in radiosensitivity of ESCC. Methods Brd2/3/4 proteins were assessed in radiosensitive and radioresistant ESCC tissues using IHC. A serial of functional experiments was performed to verify the significance of Brd4 in ESCC. RNA-seq and bioinformatics analyses were used to determine the potential downstream targets. The dual-luciferase reporter and ChIP assay were further examined the underlying regulatory mechanism among targets. Besides, we further verified the importance of ATF3-mediated serine and nucleotide metabolism in radiated ESCC cells. Results Brd4 is highly expressed in radio-resistant ESCC tissue. Knockdown of Brd4 led to increased DNA damage and cell apoptosis in irradiated ESCC cells. RNA-seq analyses exhibited that ATF3 was a potential downstream target of Brd4. The dual-luciferase reporter and ChIP assay demonstrated that Brd4 upregulated ATF3 expression via activation its promoter region. Besides, we found that ATF3 could facilitate the enzyme activities involved in serine and nucleotide biosynthesis pathway to promote radiation-induced DNA damage repair. Conclusion Brd4 facilitates ATF3 expression via binding to and activating ATF3 promoter region. Enhanced ATF3 further increases crucial enzymes activity in serine and nucleotide biosynthesis pathway to promote radiation-induced DNA damage repair. Targeting Brd4 is a promising treatment strategy to improve radiosensitivity in ESCC.","PeriodicalId":11354,"journal":{"name":"Diseases of the Esophagus","volume":"61 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"270. ANALYSIS OF THE RELATIONSHIP BETWEEN CARDIAC DIAMETER AND ANASTOMOTIC TROUBLE IN TRANS HIATAL ESOPHAGOGASTRIC JUNCTION CANCER SURGERY","authors":"Yudai Higuchi, Suguru Maruyama, Katsutoshi Shoda, Hidenori Akaike, Yoshihiko Kawaguchi, Ryo Saito, Koichi Takiguchi, Wataru Izumo, Yuki Nakata, Kensuke Shiraishi, Shinji Furuya, Hidetake Amemiya, Hiromichi Kawaida, Daisuke Ichikawa","doi":"10.1093/dote/doae057.046","DOIUrl":"https://doi.org/10.1093/dote/doae057.046","url":null,"abstract":"Background The number of esophagogastric junction (EGJ) cancers has been increasing in recent years, and the trans hiatal lower esophagectomy is widely used for cases with shorter esophageal invasion. However, the mediastinal surgical view through the hiatus is sometimes poor due to cardiac compression, and resection and reconstruction are often difficult in these cases. We therefore retrospectively examined the influence of cardiac diameter on short-term postoperative outcomes. Methods From June 2004 to December 2022, 97 patients underwent radical surgery for EGJ cancer at our hospital, of those 67 patients underwent trans-hiatal approach. We retrospectively analyzed the relationship between cardiothoracic ratio (CTR) on preoperative chest radiographs and left ventricular diastolic diameter (LVDd) on echocardiography and postoperative complications in patients underwent trans hiatal approach. Results Patients with preoperative CTR >50% had a significantly higher rate of anastomotic leakage (33% v.s. 7%, p<0.05), and similarly for LVDd, when divided into two groups using 43 mm as cut-off, patients with larger heart diameter had significantly more anastomotic leakage (69% v.s. 24%, p<0.05). We performed a multivariate analysis using CTR, ASA-PS, blood loss, operative time, BMI, and tumor diameter, and defined CTR as an independent risk factor for anastomotic leakage (OR: 7.76, 95%CI: 1.45-41.4, p<0.05). Conclusion Trans-hiatal approach can be used for resection of EGJ cancer. However, special attention should be paid to the prevention of anastomotic leakage in patients with cardiac comorbidities or a large preoperative CTR or LVDd.","PeriodicalId":11354,"journal":{"name":"Diseases of the Esophagus","volume":"11 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142205087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"627. LEFT THORACOSCOPIC PRIMARY REPAIR OF ESOPHAGEAL PERFORATION SECONDARY TO BOERHAAVE SYNDROME","authors":"Aung Myint Oo, Charleen Yeo, Ryan Jun-Yi Tan","doi":"10.1093/dote/doae057.334","DOIUrl":"https://doi.org/10.1093/dote/doae057.334","url":null,"abstract":"Background With the advancement of the minimally invasive surgical techniques, more and more acute surgical conditions including esophageal perforations can be performed safely using minimally invasive surgical approach. Methods A middle aged male patient presented to our department with 3 days history of epigastric pain and vomiting. He was febrile on admission and investigation revealed the left sided esophageal perforation due to Boerhaave Syndrome with left sided pleural effusion. He underwent left thoracoscopic primary repair of esophageal perforation and wash out successfully. This is the video of the thoracoscopic primary repair of the perforation. Patient was put in the right lateral semi prone position, the area of perforation was identified by careful dissection of the pleura and repaired was performed in 2 layers. The pleura cavity was washed out with warm saline and underwater sealed chest tube drain was inserted. Results Post operatively patient was transferred to surgical intensive care unit for 1 day. Patient was kept nil by mouth with parenteral nutrition for 7 days. Contrast study was performed on post operative day 7 and started oral feeding when there was no evidence of leakage. Patient recovered and discharged well. Conclusion Thoracoscopic primary repair with wash out of spontaneous esophageal perforation secondary to Boerrhave Syndrome is challenging however it is safe and can be performed successfully. https://drive.google.com/file/d/1JTfJLV-ngUBwzMybGV4FL8EEQB-ysj9O/view","PeriodicalId":11354,"journal":{"name":"Diseases of the Esophagus","volume":"6 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142205204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"794. RETROSPECTIVE ANALYSIS OF CLINICAL CHARACTERISTICS AND PROGNOSIS OF SYNCHRONOUS MULTIPLE PRIMARY ESOPHAGEAL SQUAMOUS CELL CARCINOMA","authors":"Liu Wenyi, Zhentao Yu","doi":"10.1093/dote/doae057.390","DOIUrl":"https://doi.org/10.1093/dote/doae057.390","url":null,"abstract":"Background Multiple primary esophageal squamous cell carcinoma (MPESCC) is a rare and complex type of esophageal cancer, categorized into synchronous multiple primary esophageal squamous cell carcinoma (S-MPESCC) and metachronous multiple primary esophageal squamous cell carcinoma (M-MPESCC). Compared to solitary esophageal squamous cell carcinoma (SESCC), multiple primary esophageal squamous cell carcinoma (MPESCC) generally has a poorer prognosis, with significant differences in treatment strategies and survival outcomes. This study aims to explore the clinical characteristics and prognosis of S-MPESCC through a retrospective analysis of a large patient cohort. Methods This study retrospectively analyzed clinical data from 758 patients with esophageal squamous cell carcinoma (ESCC) who underwent surgical resection at two medical centers in China from January 2012 to December 2021. The S-MPESCC group included 68 patients, and the SESCC group included 690 patients. All patients underwent radical esophagectomy with systematic lymph node dissection. Preoperative and postoperative data were collected, including gender, age, family history, tumor staging, and lymph node metastasis. Results There were no significant differences in baseline characteristics, such as gender, age, and family history, between the S-MPESCC and SESCC groups. The lymph node metastasis rate was significantly higher in the S-MPESCC group compared to the SESCC group, especially in the upper mediastinal and abdominal regions (P<0.05). Survival status was monitored through outpatient visits and telephone calls until December 2022. The results showed that the 3-year and 5-year survival rates of the S-MPESCC group were significantly lower than those of the SESCC group (P< 0.05). Patients with a greater depth of primary tumor infiltration had poorer survival outcomes in the S-MPESCC group. Conclusion This study clarified the clinical characteristics and prognosis of S-MPESCC through a retrospective analysis of 758 ESCC patients. S-MPESCC patients had a significantly higher rate of lymph node metastasis and a poorer prognosis compared to SESCC patients. Future efforts should focus on optimizing treatment strategies to improve the prognosis and survival rates of patients with S-MPESCC.","PeriodicalId":11354,"journal":{"name":"Diseases of the Esophagus","volume":"22 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142205209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"438. TECHNIQUE OF COMPLETELY ROBOTIC MCKEOWN (3-HOLE) ESOPHAGECTOMY WITH INTRA-CORPOREAL GASTRIC CONDUIT CREATION, AND CERVICAL ESOPHAGO-GASTRIC ANASTOMOSIS FOR MID-ESOPHAGEAL ADENOCARCINOMA","authors":"Olusola Oduntan, William Ricks, Christopher Bobba, William Weir, Mindaugas Rackauskas","doi":"10.1093/dote/doae057.188","DOIUrl":"https://doi.org/10.1093/dote/doae057.188","url":null,"abstract":"Background Esophageal cancer is the 7th leading cause of cancer deaths, with an estimated total case of 22,370 in both males and females in 2024. Adenocarcinoma and squamous cell carcinoma account for over 90% of histology at diagnosis. The incidence of adenocarcinoma continues to rise due to the rising incidence and prevalence of obesity, gastro-esophageal reflux disease and Barrett's esophagus. Multi-modality treatment is currently the standard of care for locally advanced disease. This consists of neoadjuvant concurrent chemotherapy and radiation therapy, followed by esophagectomy. Minimally invasive approaches to esophagectomy are associated with decreased post-operative morbidities and overall satisfactory outcomes. While the Ivor Lewis esophagectomy with intra-thoracic anastomosis is the most common surgical approach to resection of distal esophageal and gastroesophageal (GE) junction tumors, the McKeown (3-hole) esophagectomy with cervical esophago-gastric anastomosis is best suited for tumors located in the proximal and mid-esophagus. Methods We describe our technique of robotic McKeown (3-hole) esophagectomy for mid-esophageal adenocarcinoma after neoadjuvant concurrent chemo-radiation therapy for clinical stage uT3N0M0 tumor. The thoracic esophagus is completely mobilized from the esophageal hiatus of the diaphragm up to the thoracic inlet via a right thoracoscopic approach, with harvesting of the regional lymph nodes together with the specimen. The left neck incision is made along the anterior border of the sternocleidomastoid muscle and the inferior belly of the omohyoid muscle is transected. The cervical esophagus is then completely mobilized into the wound and secured using a Penrose drain. Using a laparoscopic approach, the entire stomach is mobilized with division of the left gastric vessels but careful preservation of the right gastro-epiploic arcade while transecting the greater omentum and the short gastric vessels. An intra-corporeal creation of the gastric conduit then follows. The gastric conduit, secured to the proximal stomach at the resection staple line, is subsequently tunneled via the esophageal hiatus and through the mediastinum to exit at the left neck incision by applying traction on the cervical esophagus. The specimen is separated from the conduit, and the cervical esophagus is transected at the desired location for the anastomosis. A stapled end-to-side but functional end-to-end esophago-gastric anastomosis (Orringer's technique) is then created. Results A completely robotic technique of McKeown (3-hole) esophagectomy without the need to exteriorize the stomach to fashion the gastric conduit via a (mini)laparotomy is successfully accomplished in the majority of our patients with proximal or mid-esophageal tumors. An uneventful postoperative recovery was made. Fluoroscopic esophagram on post-operative day 5 did not demonstrate leakage from the anastomotic site. Gastric conduit emptying was satisfactory despite the","PeriodicalId":11354,"journal":{"name":"Diseases of the Esophagus","volume":"14 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142205236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"810. ROBOTIC ASSISTED CISTERNA CHYLI EMBOLIZATION FOR ABDOMINAL CHYLE LEAKAGE AFTER IVOR LEWIS ESOPHAGECTOMY","authors":"Laurens Denissen, Jody Valk, Thomas Jardinet, Michiel de Maat","doi":"10.1093/dote/doae057.404","DOIUrl":"https://doi.org/10.1093/dote/doae057.404","url":null,"abstract":"Background High output chyle leakage is a challenging complication following esophagectomy, carrying substantial morbidity and even mortality. Initial conservative management with parenteral feeding is commonly advised resulting in lengthy episodes of hospitalization and prolonged chest tube placement. Here, we present a case post Ivor-Lewis esophagectomy with high-output chyle leakage where we localized the leakage site to be at the cysterna chyli and subsequently treated it operatively combining robotics, fluorescence and embolization with glue. Methods A 74-year-old male underwent robotic-assisted minimally invasive Ivor Lewis esophagectomy for distal esophageal adenocarcinoma. Postoperatively, chylous fluid was drained from the chest up to 700-1300cc per day despite parenteral feeding. Lipiodol lymphangiography identified extravasation of contrast at the cysterna chyli and correct clipping of the thoracic duct. Due to failure of conservative management, on postoperative day 14, robotic-assisted exploration of the truncal region with intranodal injection of indocyanine green was performed. Results This innovative procedure revealed the leakage site medially of the coeliac trunc at the cysterna chyli. Lymphatic sealing was achieved via percutaneous endoluminal embolization using a microcatheter and Histoacryl® injections, resulting in an abrupt resolution of the leak and discharge with oral MCT diet on day 5 after reoperation. Conclusion This case demonstrated the feasibility and efficacy of an innovative multimodal technique combining the dexterity and fluorescence of robotic surgery with a laparoscopic application of an interventional radiology embolization technique. Because of the risk of venous emboli, we note that this technique should only be applied in cases of abdominal chyle leakage when the thoracic duct is interrupted. https://www.dropbox.com/scl/fi/sktltdc1be41jfq4dk3lt/Video-Presentation-ISDE-2024-Robotic-Embolisation-Abdominal-Chyle-leakage-Def.mp4?rlkey=1wni1dpnjg4swiajcjdfa6isn&st=wx30jbi7&dl=0","PeriodicalId":11354,"journal":{"name":"Diseases of the Esophagus","volume":"4 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142205267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"450. TISSUE RESIDENT MEMORY CELLS: CORRELATING THE PHENOTYPIC AND FUNCTIONAL CAPABILITIES OF A POTENTIAL TUMOUR REACTIVE CELL POPULATION IN OESOPHAGEAL ADENOCARCINOMA","authors":"TO Natalie, Hayden Pearce, Richard Evans, Wayne Croft, Rahul Hejmadi, Mona Elshafie, Ewen Griffiths, Paul Moss","doi":"10.1093/dote/doae057.198","DOIUrl":"https://doi.org/10.1093/dote/doae057.198","url":null,"abstract":"Background Oesophageal adenocarcinoma (OAC) is a disease with a high mortality and morbidity rate. Immunotherapy has recently demonstrated progress in the treatment of OAC but its impact on long term survival is currently uncertain. Tissue resident memory (TRM) T cells are a subset of lymphocytes within the tumour/tissue infiltrating lymphocyte (TIL) milieu that has attracted considerable interest within cancer immunology. Although TRM cells have been associated with better outcomes in multiple cancer types there is a lack of knowledge of their role in OAC. This study aims to critically correlate the phenotype of TRM with their functional capacity in this disease. Methods 33 patients undergoing surgical resection for OAC were recruited and consented for collection of fresh tumour (T), adjacent normal tissue (AN), and peripheral blood. Peripheral blood mononuclear cell (PBMC) from blood and infiltrating lymphocytes from T and AN were isolated using standard density gradient and enzymatic digestion protocols. Multiparametric flow cytometry was performed on 12 patients using matched PBMC, T and AN infiltrating lymphocytes for phenotypic analysis and 21 patients for functional analysis following cell stimulation assay. BD FACSymphony was used for data acquisition and data analysed on FlowJo version 10.10. Statistical analysis was carried out using GraphPad Prism. Results TRM (CD103+CD69+) dominated the CD8+ T cell population of T and AN TIL. Expression of checkpoint proteins PD1+ and CD39+, a marker of tumour reactivity, was identified on CD8+ TRM and CD8+ non TRM in TIL. The differentiation status of TRM within memory lineages demonstrated that TRM express a higher proportion of effector memory cells (CCR7-CD45RA) compared to those in blood. TRM cells also showed lower expression of the transcription factors EOMES, TBET and TCF compared to CD8+ cells within PBMC. Moreover, tumour CD8+ TRM populations had reduced ability to produce IL-2 following stimulation compared to adjacent normal TRM populations. Conclusion TRM make up a large proportion of CD8+ T cell within the tumour microenvironment (TME) of OAC. TRM generation is associated with the downregulation of T-Box transcription factors EOMES and TBET and expression of an effector memory phenotype with reduction of the stem-like transcription factor, TCF. High levels of CD39+ indicate a strong level of activation but the increased PD1 expression and reduced capability to produce IL2 indicate functional impairment suppressed within the TME. An opportunity may exist to reverse this with novel immunotherapeutic agents.","PeriodicalId":11354,"journal":{"name":"Diseases of the Esophagus","volume":"47 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"254. QUANTIFYING PERIOPERATIVE RISKS FOR ANTIREFLUX AND HIATUS HERNIA SURGERY: A MULTICENTER COHORT STUDY OF 4301 PATIENTS","authors":"David Liu, Darren Wong, Su Kah Goh, Aly Fayed, Sean Stevens, Ahmad Aly, Tim Bright, Laurence Weinberg, David Watson","doi":"10.1093/dote/doae057.036","DOIUrl":"https://doi.org/10.1093/dote/doae057.036","url":null,"abstract":"Background Predicting perioperative risks for fundoplication and hiatus hernia repair will inform treatment decision-making, hospital resource allocation, and benchmarking. However, available risk calculators do not account for hernia anatomy or technical aspects of surgery in estimating perioperative risk. Using a comprehensive Australian cohort, we quantified the incidence and determined the independent predictors of intraoperative and postoperative complications associated with antireflux and hiatus hernia surgeries. Additionally, we performed an in-depth analysis to understand the complication profiles associated with each independent risk factor. Methods Retrospective analysis of all elective antireflux and hiatus hernia surgeries in 36 Australian hospitals over 10 years. Hierarchical multivariate logistic regression analyses were performed to determine the independent predictors of intraoperative and postoperative complications accounting for patient, surgical, anatomical, and perioperative factors. Results A total of 4301 surgeries were analyzed. Of these, 1569 (36.5%) were large/giant hernias and 292 (6.8%) were revisional procedures. The incidence rates of intra- and postoperative complications were 12.6% and 13.3%, respectively. The Charlson Comorbidity Index, hernia size, revisional surgery, and baseline anticoagulant usage independently predicted both intraoperative and postoperative complications. These risk factors were associated with their own complication profiles. Finally, using risk matrices, we visualized the cumulative impact of these four risk factors have on the development of intraoperative, overall postoperative, and major postoperative complications. Conclusions This study has improved our understanding of perioperative morbidity associated with antireflux and hiatus hernia surgery. Our findings group patients along a spectrum of perioperative risks that informs care at an individual and institutional level.","PeriodicalId":11354,"journal":{"name":"Diseases of the Esophagus","volume":"316 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}