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Charles M. Vollmer
University of Pennsylvania
SurgeryPancreatectomyPancreatic fistulaGeneral surgeryMedicine
215Publications
40H-index
5,371Citations
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Publications 197
Newest
#1Bofeng Chen (UPenn: University of Pennsylvania)H-Index: 2
#2Maxwell T. Trudeau (UPenn: University of Pennsylvania)
Last. Charles M. Vollmer (UPenn: University of Pennsylvania)H-Index: 40
view all 11 authors...
Background Hyperbilirubinemia is commonly observed in patients requiring pancreatoduodenectomy (PD). Thus far, literature regarding the danger of operating in the setting of hyperbilirubinemia is equivocal. What remains undefined is at what specific level of bilirubin there is an adverse safety profile for undergoing PD. The aim of this study is to identify the optimal safety profile of patients with hyperbilirubinemia undergoing PD.
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#1Zijian Yang (Applied Science Private University)
#1Zijian Yang (UPenn: University of Pennsylvania)H-Index: 4
Last. Hanfei Shen (UPenn: University of Pennsylvania)
view all 19 authors...
Purpose: To determine whether a multi-analyte liquid biopsy can improve the detection and staging of pancreatic adenocarcinoma (PDAC). Experimental Design: We analyzed plasma from 204 subjects (71 healthy, 44 non-PDAC pancreatic disease, and 89 PDAC) for the following biomarkers: Tumor-associated extra-cellular vesicle (EV) miRNA and mRNA isolated on a nanomagnetic platform that we developed and measured by next-generation sequencing or qPCR, circulating cell-free DNA (ccfDNA) concentration meas...
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#1Yi Miao (Nanjing Medical University)H-Index: 21
#2Zipeng Lu (Nanjing Medical University)H-Index: 10
Last. Jens Werner (LMU: Ludwig Maximilian University of Munich)H-Index: 45
view all 41 authors...
Abstract Background The aim was to evaluate the various operative techniques and outcomes used to manage the pancreatic transection plane (or stump) during a left (distal) pancreatectomy and to develop expert consensus guidelines. Methods Evidence-based, clinically relevant questions were discussed and then were circulated among members of the International Study Group of Pancreatic Surgery. After agreement on the questions and statements, voting in a 9-point Likert scale was used to gauge the l...
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#1Ajith K. Siriwardena (Manchester Royal Infirmary)H-Index: 31
#2John A. Windsor (University of Auckland)H-Index: 52
Last. Martin D. SmithH-Index: 7
view all 38 authors...
Abstract Background The International Study Group for Pancreatic Surgery provides globally accepted definitions for reporting of complications after pancreatic surgery. This International Study Group for Pancreatic Surgery project aims to provide a standardized framework for reporting of the results of operative treatment for chronic pancreatitis. Methods An International Study Group for Pancreatic Surgery project circulation list was created with pre-existing and new members and including gastr...
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#1Maxwell T. Trudeau (UPenn: University of Pennsylvania)
#2Laura Maggino (UPenn: University of Pennsylvania)H-Index: 6
Last. Charles M. Vollmer (UPenn: University of Pennsylvania)H-Index: 40
view all 9 authors...
Abstract Background Intraoperative drain use for pancreatoduodenectomy (PD) has been practiced in an unconditional, binary manner (placement/no-placement). Alternatively, dynamic drain management has been introduced, incorporating the Fistula Risk Score (FRS) and drain fluid amylase (DFA) analysis, to mitigate clinically-relevant pancreatic fistula (CR-POPF). Study Design An extended experience with dynamic drain management was employed at a single institution for 400 consecutive PDs (2014-2019)...
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#1Fabio Casciani (UPenn: University of Pennsylvania)
#2Charles M. Vollmer (UPenn: University of Pennsylvania)H-Index: 40
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#1M. Passeri (Carolinas Medical Center)H-Index: 2
#2Ryan Picken (Carolinas Medical Center)H-Index: 1
Last. David A. Iannitti (Carolinas Medical Center)H-Index: 30
view all 9 authors...
Abstract Background Since 2012, the AHPBA has hosted an annual HPB Fellows' Course at Carolinas Medical Center. All fellows training in an accredited HPB fellowship are eligible to attend. The aim of this study was to evaluate the impact of this conference and assess possible areas of improvement. Methods The Carolinas Fellows' Course (CFC) is a structured educational activity involving didactics, skills labs, and live case presentations. The course emphasizes minimally invasive surgery (MIS) an...
1 CitationsSource
#1Horacio J. AsbunH-Index: 31
#2Alma MoekotteH-Index: 2
Last. Marc G. BesselinkH-Index: 50
view all 74 authors...
Objective: The aim of tis study was to develop and externally validate the first evidence-based guidelines on minimally invasive pancreas resection (MIPR) before and during the International Evidence-based Guidelines on Minimally Invasive Pancreas Resection (IG-MIPR) meeting in Miami (March 2019). Summary Background Data: MIPR has seen rapid development in the past decade. Promising outcomes have been reported by early adopters from high-volume centers. Subsequently, multicenter series as well a...
3 CitationsSource
#1Seth J. Concors (HUP: Hospital of the University of Pennsylvania)H-Index: 3
#2Andrew J. Sinnamon (HUP: Hospital of the University of Pennsylvania)H-Index: 7
Last. Robert E. Roses (HUP: Hospital of the University of Pennsylvania)H-Index: 26
view all 7 authors...
Abstract Background Studies supporting surgical management of metastatic pancreatic neuroendocrine tumor (PNET) are limited by selection bias. Chromogranin A (CgA) has been used as a biomarker for PNET and may reflect disease burden or biology. This study aimed to correlate CgA level with overall survival and to use it to match patients selected for different treatment approaches in an analysis of the impact of surgical management. Methods 1478 patients diagnosed with PNET in the National Cancer...
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#1Maxwell T. Trudeau (UPenn: University of Pennsylvania)
#2Laura Maggino (UPenn: University of Pennsylvania)H-Index: 10
Last. Charles M. Vollmer (UPenn: University of Pennsylvania)H-Index: 40
view all 4 authors...
Purpose This study aimed to identify optimal management decisions for surgeons preforming pancreatic head resection on patients with altered anatomy due to a previous Roux-en-Y gastric bypass (RYGB).
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