Publications by authors named "Mehul Gupta"

Post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP) is common. Although multiple pancreatic duct (PD) cannulations are a known risk factor for PEP, the impact of single cannulations remains controversial. We aimed to identify whether single PD cannulation is associated with PEP.

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Background And Study Aims: Endoscopic submucosal dissection (ESD) is a potentially surgery-sparing technique for colorectal neoplasia resection. Outcomes of ESD for residual or recurrent colorectal neoplasia are not well described. This meta-analysis aimed to evaluate the effectiveness and safety of ESD in treating residual or recurrent colorectal neoplasia.

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Introduction: Chordomas are rare, locally aggressive tumours that present significant treatment challenges due to their proximity to critical neurovascular structures. Artificial intelligence (AI) methodologies have shown promise in enhancing diagnostic precision, surgical planning, and prognostication in various cancers.

Research Question: What is the current landscape of AI applications in chordoma management, and what are the key limitations and future directions for integrating AI into clinical practice for this rare malignancy?

Materials And Methods: We conducted a scoping review following the PRISMA-ScR guidelines and the Arksey and O'Malley framework.

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Background And Aims: Patients with chronic pancreatitis (CP) may develop pancreatic exocrine insufficiency (PEI) but data regarding subclinical PEI are scarce. Our objective was to detect subclinical PEI in patients with CP and its functional consequences.

Methods: We prospectively included patients with CP from April 2018-December 2021.

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Background And Objective: Patients receiving immune checkpoint blockade (ICB) therapy may experience periods of prolonged disease control without a need for systemic therapy. Treatment-free survival (TFS) is an important measure for this period, but no data are available for patients with metastatic renal cell carcinoma (mRCC) starting first-line agents. Our aim was to analyze TFS outcomes for patients with mRCC starting first-line therapy.

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Background: Colorectal cancer is the third most common malignancy globally. Early-onset colorectal cancer (EOCRC) is becoming a growing healthcare focus globally, particularly in North America. We estimated trends in incidence, mortality, and disability-adjusted life years (DALYs) for EOCRC in Canada between 1990 and 2019.

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Background & Aims: Endoscopic retrograde cholangiopancreatography (ERCP)-related adverse events (AEs) are associated with morbidity, mortality, and health care expenditure. We aimed to assess incidences and comparisons of ERCP AEs.

Methods: We included studies performed after 2000 reporting on ERCP AEs from database inception through March 12, 2024.

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Background:  Post-endoscopic retrograde cholangiopancreatography (ERCP) adverse events (AEs) are common, as is unplanned healthcare utilization (UHU). We aimed to assess potential etiologic associations between intra-/post-procedural patient-reported experience measures (PREMs) and post-ERCP AEs and UHU. METHODS : Prospective data from a multicenter collaborative were used.

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Article Synopsis
  • This study looked at how much money is spent on treating brain and nervous system cancers in the U.S. from 1996 to 2016.
  • Spending jumped from $2.72 billion to $6.85 billion, but sadly, more people were still dying from these cancers during that time.
  • The results show that even though more money was spent, it didn’t help people live longer, especially affecting older patients and those with private insurance.
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Introduction: Laparoscopic sleeve gastrectomy (SG) is the most common bariatric surgical procedure worldwide. Approximately 20%-30% of patients present with weight loss failure or reflux following SG, which might require reoperative surgery. We present the surgical outcomes and complications following reoperative bariatric surgery at a tertiary care centre.

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Background: The association between objective imaging response and first line immune checkpoint inhibitor (ICI) therapy regimes in advanced melanoma remains uncharacterized in routine practice.

Methods: We conducted a multi-center retrospective cohort analysis of advanced melanoma patients receiving first line ICI therapy from August 2013-May 2020 in Alberta, Canada. The primary outcome was likelihood of RECIST v1.

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The presence of a supernumerary subserosal muscle layer of the bowel is an extremely unusual congenital development. The following is a report of diffuse involvement of the intestine with a supernumerary subserosal muscle coat. The current patient, a 29-year-old male, was evaluated in January 2022 for a long-standing history of subacute intestinal obstruction (SAIO).

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Objective: The objective was to assess the performance of a context-enriched large language model (LLM) compared with international neurosurgical experts on questions related to the management of vestibular schwannoma. Furthermore, another objective was to develop a chat-based platform incorporating in-text citations, references, and memory to enable accurate, relevant, and reliable information in real time.

Methods: The analysis involved 1) creating a data set through web scraping, 2) developing a chat-based platform called neuroGPT-X, 3) enlisting 8 expert neurosurgeons across international centers to independently create questions (n = 1) and to answer (n = 4) and evaluate responses (n = 3) while blinded, and 4) analyzing the evaluation results on the management of vestibular schwannoma.

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Article Synopsis
  • Large language models (LLMs), like ChatGPT, have shown potential for use in medicine, but there are significant gaps in their evaluation and application within clinical settings.
  • Research found that while LLMs can assist with tasks like compiling patient notes and supporting clinical decision-making, there are serious concerns regarding biases, inaccuracies, and ethical implications.
  • The review calls for a standardized evaluation framework to assess LLMs' clinical utility and identifies areas for future research to address existing limitations.
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Background: The systematic review of clinical research papers is a labor-intensive and time-consuming process that often involves the screening of thousands of titles and abstracts. The accuracy and efficiency of this process are critical for the quality of the review and subsequent health care decisions. Traditional methods rely heavily on human reviewers, often requiring a significant investment of time and resources.

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Introduction: The data comparing laparoscopic sleeve gastrectomy (LSG) and one-anastomosis gastric bypass (OAGB) in patients with BMI ≥ 60 kg/m is scarce.

Methods: Prospectively collected data of patients with BMI ≥ 60 kg/m undergoing LSG or OAGB from January 2008 until June 2022 was analyzed retrospectively. Weight loss outcomes, impact on comorbidities, and complications were compared in both groups.

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Survival outcomes for patients with neuroblastoma vary markedly and reliable prognostic markers and risk stratification tools are lacking. We sought to identify and validate a transcriptomic signature capable of predicting risk of mortality in patients with neuroblastoma. The TARGET NBL dataset (n = 243) was used to develop the model and two independent cohorts, E-MTAB-179 (n = 478) and GSE85047 (n = 240) were used as validation sets.

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Clear cell renal cell carcinoma (ccRCC) is the most common histological subtype of renal cell carcinoma. The prognosis for patients with ccRCC has improved over recent years with the use of combination therapies with an anti-programmed death-1 (PD-1) backbone. This has enhanced the quality of life and life expectancy of patients with this disease.

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Importance: Treatment-free survival (TFS) represents an alternative time-to-event end point, accurately characterizing time spent free of systemic therapy, providing a more patient-centric view of immune checkpoint inhibitor (ICI) therapy regimens. There remains a lack of studies evaluating TFS outcomes among patients with advanced melanoma who are receiving immunotherapy, especially outside of the clinical trial setting.

Objective: To evaluate TFS outcomes for patients with advanced melanoma receiving first-line ICI therapy outside of a clinical trial setting.

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Article Synopsis
  • A new prognostic model has been developed to assess overall survival in patients with advanced melanoma who are being treated with immune checkpoint inhibitors, filling a gap in existing risk stratification tools.
  • The model identifies key independent factors that impact survival: high white blood cell count, high lactate dehydrogenase, low albumin levels, worse performance status, and presence of liver metastases.
  • Patients are categorized into three risk groups based on these factors, with survival rates drastically differing among them (52.9 months for favorable, 13 months for intermediate, and 2.7 months for poor prognosis).
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Background: Paradigm shifts in kidney cancer management have led to higher health care spending. Here, total and per capita health care spending and primary drivers of change in health expenditures for kidney cancer in the United States between 1996 and 2016 are estimated.

Methods: Public databases developed by the Institute for Health Metrics and Evaluation for the Disease Expenditure Project were used.

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Multiple sclerosis (MS) is a chronic debilitating neurological condition with a wide range of phenotype variability. A complex interplay of genetic and environmental factors contributes to disease onset and progression in MS patients. Vitamin D deficiency is a known susceptibility factor for MS, however the underlying mechanism of vitamin D-gene interactions in MS etiology is still poorly understood.

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