Publications by authors named "Jonathan B Yuval"

Introduction: Side-to-side stapled ileocolonic anastomosis (ICA) is commonly used in Crohn's disease (CD). Antiperistaltic ICA (APICA) and isoperistaltic ICA (IPICA) alignments differ in ease of neo-terminal ileum (neo-TI) intubation, potentially impacting endoscopic follow-up. This study compares postsurgical neo-TI intubation feasibility between APICA and IPICA.

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Background: One anastomosis gastric bypass (OAGB) is the most common metabolic and bariatric surgery (MBS) in Israel, recognized for its effectiveness in achieving sustainable weight loss and mitigating obesity-related diseases. The metabolic outcomes of OAGB are significantly influenced by the length of the biliopancreatic limb (BPL). The objective of this study is to determine whether tailoring the BPL length to the total small bowel length (TSBL) results in more effective weight loss compared to patients undergoing OAGB with a fixed BPL of 180 cm.

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Unlabelled: In this study, we examined racial disparities in guideline-concordant care (GCC) and clinical outcomes of patients with colon cancer treated at a single comprehensive cancer center. We analyzed data from self-reported Hispanic, non-Hispanic Black (NHB), and non-Hispanic White (NHW) patients who underwent curative colectomy for stage I to III colon cancer between 2006 and 2021 at Memorial Sloan Kettering Cancer Center. GCC was defined as retrieval of ≥12 lymph nodes and appropriate receipt of adjuvant chemotherapy.

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Objective: Smoking is associated with increased severity and recurrence of Crohn's disease (CD), but its impact on perioperative outcomes is unclear. This study evaluated the association between smoking and 90-day postoperative complications in patients with CD undergoing abdominal surgery.

Methods: We conducted a retrospective cohort study (2017-2019) of 294 patients with CD who underwent abdominal surgery.

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Background Urgent colectomies constitute a significant portion of acute care surgery (ACS). While general surgeons (GS) typically perform colonic resections, more complex cases, particularly those involving colorectal cancer (CRC) and inflammatory bowel disease, may demand a higher level of expertise. This study examines the outcomes of CRC-related urgent colectomies with end stoma performed by colorectal specialist (CRS) surgeons compared to those conducted by GS without sub-specialization or with sub-specialization other than CRS.

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Purpose: The role of FDG-PET in the restaging rectal cancer following neoadjuvant therapy (NAT) is not clear. We compared the accuracy of FDG-PET and MRI in the assessment of rectal cancer response to NAT.

Methods: Data of patients treated between January 2015 and September 2022 were captured from a rectal tumor registry.

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: Metabolic and bariatric surgery (MBS) is a well-established treatment for severe obesity, yet its effects in patients with inflammatory bowel disease (IBD) are not well understood. MBS in this population presents unique challenges, including the potential for exacerbating inflammatory disease activity and causing complications such as malnutrition and medication malabsorption. This study aims to assess the long-term outcomes of MBS in IBD patients, focusing on both metabolic outcomes and its impact on the course of IBD.

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Objective: The optimal level of resident autonomy in emergency colorectal surgery is unclear. This study assessed perioperative outcomes in patients undergoing emergency colectomy with end stoma based on the presence of an attending surgeon.

Participants: A retrospective analysis was conducted at a tertiary teaching hospital, including 360 patients who underwent emergency colectomy with end stoma between 2013 and 2023.

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Article Synopsis
  • - Gastroesophageal reflux disease (GERD) is prevalent among severely obese patients, and its impact post-sleeve gastrectomy (SG) is uncertain, leading some surgeons to view GERD as a reason to avoid SG.
  • - A study analyzed data from patients with preoperative GERD who had SG, finding that 5.8% of patients diagnosed with GERD had follow-up results, with most (78.1%) still experiencing GERD symptoms after surgery.
  • - The findings showed that better GERD-related quality of life (GERD-HRQL) scores were linked to lower baseline Body Mass Index (BMI), lower smoking rates, and greater total weight loss post-surgery, suggesting that smoking cessation
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Background: Prospective randomized trials have not yet identified baseline features predictive of organ preservation in locally advanced rectal cancers treated with total neoadjuvant therapy and a selective watch-and-wait strategy.

Methods: This was a secondary analysis of the OPRA trial, which randomized patients with stage II-III rectal adenocarcinoma to receive either induction or consolidation total neoadjuvant therapy. Patients were recommended for total mesorectal excision, or watch and wait based on clinical response at 8 ± 4 weeks after completing treatment.

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Background MRI plays a crucial role in restaging locally advanced rectal cancer treated with total neoadjuvant therapy (TNT); however, prospective studies have not evaluated its ability to accurately select patients for nonoperative management. Purpose To evaluate the ability of restaging MRI to predict oncologic outcomes and identify imaging features associated with residual disease (RD) after TNT. Materials and Methods This was a secondary analysis of the Organ Preservation in Rectal Adenocarcinoma (OPRA) trial, which randomized participants from April 2014 to March 2020 with stages II or III rectal adenocarcinoma to undergo either induction or consolidation TNT.

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  • The study investigates the outcomes of patients who had One-anastomosis Gastric Bypass (OAGB) revisions due to marginal ulcer (MU) perforations over a span of two years.
  • Out of 22 patients analyzed, the majority were men, with a significant portion being smokers, and the most common surgical intervention was the omental patch.
  • At a median follow-up of 48 months, the recurrence rate of MU was 14%, indicating that while MU perforation is a chronic issue, the revision procedures were generally effective.
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  • Bariatric and metabolic surgery (BMS) is an effective option for treating severe obesity, particularly in patients with a BMI of 50 kg/m or higher.
  • A study analyzed 263 patients who underwent BMS, comparing outcomes between primary surgeries and revisional surgeries; the results showed that revisional patients had higher leak rates and longer hospital stays.
  • The mortality rate was low at 1.1% for both groups, but more research is needed to determine the best surgical techniques for patients with extremely high BMI.
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  • * Out of 1985 SG patients, 61 (3.1%) experienced leaks; the majority had complications requiring reoperation, but 78% showed satisfactory long-term weight loss and health improvement.
  • * Despite some ongoing issues, particularly with gastroesophageal reflux, the overall results suggest that SLL patients can achieve significant weight loss and resolution of other health problems post-surgery.
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Background: One anastomosis gastric bypass (OAGB) is gaining popularity worldwide due to its safety and effectiveness. OAGB is the most commonly performed metabolic bariatric surgery (MBS) in Israel. Israel is the only country where OAGB is the most prevalent MBS.

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Article Synopsis
  • One anastomosis gastric bypass (OAGB) has growing popularity and offers favorable long-term outcomes, with limited data specifically on revisional OAGB (rOAGB).
  • A study analyzed data from 424 patients, revealing that primary OAGB (pOAGB) showed greater mean total weight loss compared to rOAGB, although both groups experienced significant resolution of type 2 diabetes and hypertension.
  • Overall, OAGB is an effective solution for severe obesity, with acceptable rates of surgical revisions and complications, but more extensive research is needed for conclusive insights.
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  • Assessing clinical tumor response after total neoadjuvant therapy (TNT) is crucial for determining if patients with advanced rectal cancer can undergo watch-and-wait treatment instead of surgery.
  • The study analyzed outcomes related to organ preservation and survival rates based on a new three-tier grading system for tumor response (complete, near-complete, and incomplete) in a diverse group of patients.
  • Results included data from 304 patients, showing that age and sex were consistent across response grades, helping inform eligibility for organ preservation strategies based on clinical outcomes.
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Background: Anal adenocarcinoma bears a treatment strategy unique to other anal cancers.

Objective: This study aimed to describe oncologic outcomes of total neoadjuvant therapy followed by watch-and-wait approach for anal adenocarcinoma.

Design: Retrospective analysis.

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  • The study examines treatment outcomes for asymptomatic patients with unresectable colorectal metastases who have untreated primary tumors, focusing on left-sided versus right-sided colon cancer.
  • Out of 523 patients with stage IV colon cancer, 221 started treatment specifically for metastases, revealing that 21% developed complications requiring invasive intervention, with left-sided tumors facing a higher complication rate (29%) compared to right-sided tumors (13%).
  • The findings suggest that left-sided primary tumors pose a greater risk for complications, indicating the need for careful monitoring and potential early surgical intervention for these patients.
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Article Synopsis
  • - The OPRA trial studied the long-term outcomes of different treatment sequences for stage II/III rectal cancer, comparing induction chemotherapy followed by chemoradiation (INCT-CRT) with chemoradiation followed by consolidation chemotherapy (CRT-CNCT) to evaluate organ preservation and oncologic results.
  • - After a median follow-up of 5.1 years with 324 patients, the 5-year disease-free survival (DFS) rates were similar for both treatment groups, while TME-free survival was significantly higher in the CRT-CNCT group (54% vs. 39%).
  • - The study found that most tumor regrowth occurred within the first 2 years for patients who opted for the watch-and-w
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Purpose: Patients with locally advanced rectal cancer treated with total neoadjuvant therapy (TNT) may achieve organ preservation without a compromise to oncologic outcomes. However, reports on patient compliance with TNT and with treatment-related toxicities are limited.

Methods And Materials: The OPRA trial assessed organ preservation rates and oncologic outcomes in patients with clinical stage II/III rectal adenocarcinoma randomized to induction chemotherapy followed by chemoradiation (INCT-CRT) or chemoradiation followed by consolidation chemotherapy (CRT-CNCT).

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A small proportion of rectal adenocarcinomas develop in patients many years after the treatment of a previous cancer using pelvic radiation, and the incidence of these rectal cancers depends on the length of follow-up from the end of radiotherapy. The risk of radiation-associated rectal cancer (RARC) is higher in patients treated with prostate external beam radiotherapy than it is in patients treated with brachytherapy. The molecular features of RARC have not been fully investigated, and survival is lower compared to non-irradiated rectal cancer patients.

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  • * Robotic colectomy resulted in shorter hospital stays (5 vs. 6 days) and fewer cases needing a switch to open surgery (3% vs. 17%) than laparoscopic colectomy.
  • * Both surgical methods had similar rates of complications, overall survival, and disease-free survival, showing that robotic colectomy benefits elderly patients without affecting their cancer treatment outcomes.
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