Publications by authors named "Cheryl Meguid"

Article Synopsis
  • - This study explores how changes in body composition (like muscle and fat) during chemotherapy for localized pancreatic ductal adenocarcinoma (PDAC) can reflect tumor biology, which has been a challenge to assess clinically.
  • - The researchers analyzed data from 138 patients who received neoadjuvant therapy and surgery from 2017 to 2021, using advanced software to measure muscle and fat changes at the L3 vertebra level.
  • - Results showed that increases in muscle and fat during treatment were linked to better survival outcomes, while significant loss of visceral fat was harmful, suggesting that ongoing body composition analysis could serve as a useful biomarker for treatment response.
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Introduction: It is common for cancer patients to seek a second opinion for a variety of reasons. Understanding what drives patients to choose to receive treatment with their second opinion provider may uncover opportunities to improve the second opinion process. Therefore, we sought to identify the patient, disease, and treatment characteristics that were associated with second opinion retention rates in patients seeking a second surgical opinion for breast, colon, and pancreatic cancer.

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Article Synopsis
  • A study examined the outcomes of patients with isolated lung metastases after surgery for pancreatic ductal adenocarcinoma, hypothesizing that pulmonary metastasectomy could enhance survival with minimal risks.
  • Analyzing data from 39 patients, the researchers found that those who had pulmonary metastasectomy lived significantly longer after their recurrence (30.8 months) compared to those who didn't (18.6 months).
  • While overall survival rates were similar between groups, patients undergoing the procedure had higher survival rates at 3 years post-diagnosis (100% vs 64%) and 2 years post-recurrence (79% vs 32%), with only minor complications and no related deaths.
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Background: Metastatic renal cell carcinoma (mRCC) is a heterogenous disease with poor 5-year overall survival (OS) at 14%. Patients with mRCC to endocrine organs historically have prolonged OS. Pancreatic metastases are uncommon overall, with mRCC being the most common etiology of pancreatic metastases.

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Background: Current evidence on overall survival (OS) between invasive pancreatic ductal adenocarcinoma (PDAC) and intraductal papillary mucinous neoplasm (IPMN) is limited to single-center reports. We aimed to compare the characteristics, management, and OS of invasive PDAC vs. IPMN using a national United States (US) database.

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Purpose: Solid pseudopapillary neoplasms (SPN) are rare pancreatic cystic neoplasms with low malignant potential that tend to occur in young women. Due to the rarity of this disease, there are few large case series in the literature, and the exact pathophysiology remains unknown. In this article, we aim to share our institutional experience.

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Background: Neoadjuvant treatment is important for improving the rate of R0 surgical resection and overall survival outcome in treating patients with pancreatic ductal adenocarcinoma (PDAC). However, the true efficacy of radiotherapy (RT) for neoadjuvant treatment of PDAC is uncertain. This retrospective study evaluated the treatment outcome of neoadjuvant RT in the treatment of PDAC.

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Pancreatic cancer (PC) is likely to become the second leading cause of malignancy-associated mortality within the next 10 years and surgery remains the best hope for cure. The introduction of effective neoadjuvant treatment (NAT) has increased the resection rate of PC in the era of contemporary pancreatology. This review summarizes the surgical selection criteria for locally advanced PC (LAPC), by focusing on the commonly used predictors for resectability and better overall survival outcome.

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Intraductal papillary mucinous neoplasms (IPMN) are common but difficult to manage since accurate tools for diagnosing malignancy are unavailable. This study tests the diagnostic value of the main pancreatic duct (MPD) diameter for detecting IPMN malignancy using a meta-analysis of published data of resected IPMNs. Collected from a comprehensive literature search, the articles included in this analysis must report malignancy cases (high-grade dysplasia (HGD) and invasive carcinoma (IC)) and MPD diameter so that two MPD cut-offs could be created.

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Article Synopsis
  • Stromal fibrosis in pancreatic ductal adenocarcinoma (PDAC) activates pathways that promote survival and epithelial-to-mesenchymal transition (EMT), contributing to resistance to therapy and tumor invasion after radiation treatment.
  • Research shows that after neoadjuvant stereotactic body radiation therapy (SBRT), there is an increase in fibrosis and specific gene signatures associated with EMT, implicating two proteins—ADAM10 and ephrinB2—as key players in tumor progression.
  • Targeting ADAM10 can reduce RT-induced fibrosis and enhance tumor cell sensitivity to radiation, leading to increased survival in mouse models, suggesting new strategies to overcome radiation resistance in PDAC patients.
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Background: The role of neoadjuvant stereotactic body radiation therapy (SBRT) in patients with borderline resectable pancreas cancer (BRPC) and locally advanced pancreas cancer (LAPC) remains controversial.

Methods: We retrospectively evaluated BRPC and LAPC patients treated at our institution who underwent 2-3 months of chemotherapy followed by SBRT to a dose of 30-33 Gy. Overall survival (OS) and recurrence-free survival (RFS) were estimated and compared by Kaplan-Meier and log-rank methods.

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Article Synopsis
  • Pancreatic cystic neoplasms (PCNs) are quite common, and serous cystic neoplasms (SCNs) represent a benign subset, but multifocal/diffuse variants are rare and require careful diagnosis since they are non-invasive.
  • This study systematically reviewed the literature and included a case report to analyze the clinical characteristics and management of multifocal/diffuse SCNs, finding that the diffuse variant is more prevalent.
  • Treatment primarily involved surgical intervention or conservative approaches, with no reports of recurrence post-surgery or mortality from these rare variants, suggesting they can be managed like the unifocal SCNs.
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Objective: To identify objective preoperative prognostic factors that are able to predict long-term survival of patients affected by PDAC.

Summary Of Background Data: In the modern era of improved systemic chemotherapy for PDAC, tumor biology, and response to chemotherapy are essential in defining prognosis and an improved approach is needed for classifying resectability beyond purely anatomic features.

Methods: We queried the National Cancer Database regarding patients diagnosed with PDAC from 2010 to 2016.

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Purpose: This study was designed to compare quality of life (QoL) among patients who underwent open versus laparoscopic pancreatic resection, including distal pancreatectomy and pancreaticoduodenectomy, and to identify clinical characteristics that are associated with changes in QoL.

Methods: Quality of life (QoL) was assessed in patients undergoing pancreatic resection with the Functional Assessment of Cancer Therapy-Hepatobiliary questionnaire preoperatively and 2 weeks, 1, 3, and 6 months postoperatively. Multilevel regression modeling was used to determine the variability in each QoL domain within the first 2 weeks (postoperative period) and thereafter (recovery period).

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Context: Neoadjuvant chemotherapy is increasingly used in borderline resectable and locally advanced pancreatic cancer to facilitate surgical resection.

Objective: To compare progression free survival and overall survival in patients receiving neoadjuvant FOLFIRINOX with those receiving gemcitabine/abraxane.

Design: Retrospective cohort study.

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Article Synopsis
  • The study compares the effectiveness of neoadjuvant stereotactic body radiation therapy (SBRT) versus intensity-modulated radiation therapy (IMRT) in patients with pancreatic adenocarcinoma.
  • A total of 91 patients were analyzed, with 75 receiving SBRT and 16 receiving IMRT, showing similar surgical resection rates and postoperative outcomes between the two groups.
  • Overall survival and progression-free survival rates were also comparable, indicating that both treatment methods have similar effectiveness; however, further research is necessary for more conclusive results.
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Background: The purpose of this study is to present the largest reported series comparing open pancreaticoduodenectomy (OPD) to total laparoscopic pancreaticoduodenectomy (TLPD) in patients with ampullary neoplasms.

Methods: Patients undergoing OPD or TLPD for ampullary neoplasms from June 2012 to August 2016 were retrospectively identified. Perioperative outcomes were compared using a Wilcoxon rank-sum test, Student's t test, and Chi square analysis where appropriate.

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Background: Solid-pseudopapillary neoplasms are rare pancreatic neoplasms with low malignant potential that predominantly arise in young women. We sought to characterize this population and the evolving trend at our institution towards laparoscopic management.

Methods: We identified all patients at our institution that were surgically treated for solid-pseudopapillary neoplasm from 2008-2015.

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Background: The multidisciplinary approach to GI cancer is becoming more widespread as a result of multimodality therapy. At the University of Colorado Hospital (UCH), we utilize a formal multidisciplinary approach through specialized clinics across a variety of settings, including pancreas and biliary cancer, esophageal and gastric cancer, liver cancer and neuroendocrine tumors (NET), and colorectal cancer. Patients with these suspected diagnoses are seen in a multidisciplinary clinic.

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The management of esophageal and gastric cancer is complex and involves multiple specialists in an effort to optimize patient outcomes. Utilizing a multidisciplinary team approach starting from the initial staging evaluation ensures that all members are in agreement with the plan of care. Treatment selection for esophageal and gastric cancer often involves a combination of chemotherapy, radiation, surgery, and palliative interventions (endoscopic and surgical), and direct communication between specialists in these fields is needed to ensure appropriate clinical decision making.

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While most providers support the concept of a multidisciplinary approach to patient care, challenges exist to the implementation of successful multidisciplinary clinical programs. As patients become more knowledgeable about their disease through research on the Internet, they seek hospital programs that offer multidisciplinary care. At the University of Colorado Hospital, we utilize a formal multidisciplinary approach across a variety of clinical settings, which has been beneficial to patients, providers, and the hospital.

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5-Fluorouracile, oxaliplatin, irinotecan, and leucovorin (FOLFIRINOX) has not been extensively used in the neoadjuvant setting because of concerns with safety and toxicity. We evaluated our institutional experience with neoadjuvant FOLFIRINOX in borderline resectable pancreatic adenocarcinoma (BRPAC). The primary endpoints were completion of therapy to surgery and negative resection margin (R0) rate.

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