Publications by authors named "Steven M Cohen"

Background: The existence of sociodemographic disparities in pancreatic cancer has been well-studied but how these disparities have changed over time is unclear. The purpose of this study was to longitudinally assess patient management in the context of sociodemographic factors to identify persisting disparities in pancreatic cancer care.

Methods: Using the National Cancer Database, patients diagnosed with pancreatic ductal adenocarcinoma from 2010 to 2017 were identified.

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The aim of this study is to determine if extended-release, bioabsorbable, subcutaneous naltrexone (NTX) implants can mitigate respiratory depression after an intravenous injection (IV) of fentanyl. Six different BIOabsorbable Polymeric Implant Naltrexone (BIOPIN) formulations, comprising combinations of Poly-d,l-Lactic Acid (PDLLA) and/or Polycaprolactone (PCL-1 or PCL-2), were used to create subcutaneous implants. Both placebo and naltrexone implants were implanted subcutaneously in male dogs.

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Article Synopsis
  • - The study investigates the effects of different surgical procedures (pancreatoduodenectomy, distal pancreatectomy, and total pancreatectomy) on outcomes for patients with pancreatic neck tumors, finding similar rates of successful tumor removal (R0-resection) across these methods.
  • - Among 846 patients analyzed, results showed significant differences in lymph node involvement and the number of lymph nodes examined, with total pancreatectomy associated with worse survival rates compared to pancreatoduodenectomy.
  • - The findings suggest that while distal pancreatectomy may lead to inadequate lymph node removal, this did not adversely affect patient survival, indicating that total pancreatectomy does not provide additional survival benefits over partial resections.
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Background Objectives: The aim of this study was to determine the role of site-specific metastatic patterns over time and assess factors associated with extended survival in metastatic PDAC. Half of all patients with pancreatic ductal adenocarcinoma (PDAC) present with metastatic disease. The site of metastasis plays a crucial role in clinical decision making due to its prognostic value.

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Article Synopsis
  • The study seeks to determine the minimum and optimal number of lymph nodes (LNs) needed for effective staging and determining survival outcomes in patients with intraductal papillary mucinous neoplasm (IPMN)-derived pancreatic ductal adenocarcinoma (PDAC).
  • Current guidelines suggest a minimum of 12-15 LNs based on different cancer types, but this study specifically evaluates the IPMN subtype, showing that at least 10 LNs are necessary for accurate staging.
  • The findings indicate that examining 20 or more LNs is linked to significantly better overall survival rates (80.3 months vs. 37.2 months), with optimal cut-off points varying based on the type of surgical procedure performed.
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Objectives: Most patients with intraductal papillary mucinous neoplasms (IPMNs) are diagnosed with a solitary lesion; however, the presence of skip lesions, not appreciable on imaging, has been described. Postoperatively, these missed lesions can continue to grow and potentially become cancerous. Intraoperative pancreatoscopy (IOP) may facilitate detection of such skip lesions in the remnant gland.

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  • The study investigates whether naltrexone (NTX) implants can prevent respiratory depression caused by fentanyl in rats.
  • Researchers used bioabsorbable implants made from two polymers, administered either as a placebo or containing NTX, and measured the effects after 3.5 months.
  • Results showed that while placebo rats experienced significant respiratory depression when given fentanyl, those with NTX implants maintained normal respiratory rates, indicating NTX effectively blocked the drug’s respiratory effects.
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To present a case of retinal vascular disease characterized primarily by capillary nonperfusion in an adult with Coats plus syndrome (CPS). : A case and its findings were analyzed. : A 38-year-old woman with a history of poliosis, thrombocytopenia, seizures, and white-matter brain lesions was referred for evaluation of bilateral blurred central vision.

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Article Synopsis
  • * A study of 342 PDAC patients showed that 57.3% experienced recurrence, often within 11.3 months, with different survival rates depending on the recurrence site, notably lung involvement correlating with longer survival.
  • * Findings suggest that while most patients face poor survival post-recurrence, some with local-only recurrence may survive longer, especially those with favorable tumor characteristics, indicating they might benefit from possible curative re-resections.
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Introduction: There is no consensus regarding the role of primary tumor resection for patients with metastatic pancreatic neuroendocrine tumors (panNET). We assessed surgical treatment patterns and evaluated the survival impact of primary tumor resection in patients with metastatic panNET.

Methods: Patients with synchronous metastatic nonfunctional panNET in the National Cancer Database (2004-2016) were categorized based on whether they underwent primary tumor resection.

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Pancreatic ductal adenocarcinoma is the third-leading cause of all cancer-related deaths in the US. While 20% of patients have resectable disease at diagnosis, improved control of systemic disease using effective chemotherapeutic regimens allows for aggressive operations involving complex vascular resection and reconstruction. A pancreas protocol computed tomography (PPCT) is the gold standard imaging modality in determining local resectability (degree of tumor-vessel involvement), however, it is limited by the inter-operator variability.

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Objectives: We designed this study to test whether clazakizumab, a direct interleukin-6 inhibitor, benefits patients hospitalized with severe or critical COVID-19 disease accompanied by hyperinflammation.

Design: Multicenter, randomized, double-blinded, placebo-controlled, seamless phase II/III trial.

Setting: Five U.

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Background: Consensus guidelines discourage resection of poorly differentiated pancreatic neuroendocrine carcinoma (panNEC) given its association with poor long-term survival. This study assessed treatment patterns and outcomes for this rare malignancy using the National Cancer Database (NCDB).

Methods: Patients with non-functional pancreatic neuroendocrine tumors in the NCDB (2004-2016) were categorized based on pathologic differentiation.

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Background: The omentum provides abundant lymphatic tissue with reliable vascular anatomy, representing an ideal donor for vascularized lymph node transfer without risk for donor site lymphedema. We describe a novel, robotically assisted approach for omental flap harvest.

Methods: All patients undergoing robotically assisted omentum harvest for vascularized lymph node transfer from 2017 to 2019 were identified.

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Background: The management of ectopic pancreas is not well defined. This study aims to determine the prevalence of symptomatic ectopic pancreas and identify those who may benefit from treatment, with a particular focus on robotically assisted surgical management.

Methods: Our institutional pathology database was queried to identify a cohort of ectopic pancreas specimens.

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Introduction: Falls from heights are an important cause of unintentional fatal injury. We investigated the relationship between the characteristics of fatal falls and resulting injury patterns.

Materials And Methods: We reviewed prospectively collected data from the Office of Chief Medical Examiner in New York City between 2000 and 2010.

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Background And Objective: To determine whether patients prefer topical anesthesia or subconjunctival anesthesia for intravitreal injection.

Patients And Methods: Consecutive patients receiving bilateral simultaneous injections of anti-vascular endothelial growth factor agents were asked to participate in this within-patient, prospective, single-blinded, randomized, factorial study. Fifty-seven patients completed the study.

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Purpose: To determine if oral anticoagulation alters the association between vitreous hemorrhage (VH) and retinal tears in eyes with acute, posterior vitreous detachment (PVD).

Methods: In this retrospective chart review, the complete records of consecutive patients with spontaneous, symptomatic acute PVD from a single referral-based practice were reviewed. The use of oral anticoagulants, the presence of a VH, and the presence of a retinal tear or detachment were recorded.

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Background: Simulation-based training provides a low-stress learning environment where real-life emergencies can be practiced. Simulation can improve surgical education and patient care in crisis situations through a team approach emphasizing interpersonal and communication skills.

Objective: This study assessed the effects of simulation-based training in the context of trauma resuscitation in teams of trainees.

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Purpose: To determine if patients with macular hole report an increased family history of macular hole compared with control patients and compare the report of family history between patients with unilateral and bilateral macular holes.

Methods: This was a multicenter case-control study. Charts of patients coded with diagnosis of macular hole were reviewed, and the diagnosis of idiopathic full-thickness macular hole was ascertained in 166 patients.

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