David Ethan Loren, MD, FASGE

David Loren, MD
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Chief, Gastroenterology

Professor, Department of Medicine

Treatment Philosophy

Clinical Locations

Educational Background

  • 1987-91: BA, Washington University (Psychology)
  • 8/1990-12/1990: Semester at Sea University of Pittsburgh, Pittsburgh PA
  • 1991-1996:  Washington University, St. Louis MO (MD)
     

Certifications

  • 1999 American Board of Internal Medicine, Internal Medicine
  • 2002 American Board of Internal Medicine, Gastroenterology
  • 2012 American Board of Internal Medicine, Gastroenterology
     

Memberships

  • American College of Physicians (Associate Member - 1996-2010)
  • American Society for Gastrointestinal Endoscopy(Member 1999-2018, Fellow 2018-) 
  • American College of Gastroenterology (Member 1999-)
  • Foundation for Interventional and Therapeutic Endoscopy (President – 2020-)
  • Delaware Valley Society for Gastrointestinal Endoscopy (Member 2001-06, Program Director 2006-08, Membership Chairperson 2008-10, Secretary 2010-12, President 2012-14)
     

Honors & Awards

  • 1987-91  Scholars’ Program in Medicine, Washington University
  • 1987-91  Anna Louise Birch Scholarship, Washington University
  • 1990       Academic Dean’s List, Semester at Sea, University of Pittsburgh
  • 2005       Faculty Teaching Award, Division of Gastroenterology, Thomas Jefferson University
  • 2006      Dean’s Citation for Significant Contributions the Advancement of Education, Jefferson Medical College
  • 2006       Excellence in Teaching and Bedside Education, Jefferson Medical College
  • 2008       Excellence in Teaching and Bedside Education, Jefferson Medical, College
  • 2012      Dean’s Award for Excellence in Education, Jefferson Medical College
  • 2013      American College of Gastroenterology, Presidential Research Poster Award
  • 2015      American College of Gastroenterology Presidential Research Poster Award
  • 2017-22 Top Doctor Philadelphia Magazine
  • 2021        American College of Gastroenterology, Presidential Research Poster Award
     

Additional Publications

1.    Loren DE, Peppercorn MA. Crohn’s Disease in the Elderly. Part I: Epidemiology, Differential Diagnosis, Complications, and Cancer Risk.  Clinical Geriatrics 6(2): 15-31, 1998.
2.    Loren DE, Peppercorn MA. Crohn’s Disease in the Elderly. Part II: Medical and Surgical Therapies.  Clinical Geriatrics 6(3): 53-64, 1998.
3.    Loren DE, Cai X, Metz DC. Image of the Month. Mantle Cell Lymphoma. Gastroenterology Apr;122(4): 853, 1191, 2002.
4.    Loren DE, Lewis JD, Kochman ML. Colon Cancer Detection and Prevention. Gastroenterol Clin N Am 31: 565-586, 2002
5.    Loren DE, Seghal CM, Ginsberg GG, Kochman ML Computer-Assisted Analysis of Lymph Nodes Detected by EUS in Esophageal Carcinoma. Gastrointest Endosc 56(5): 742-6, 2002.
6.    Loren DE, Kowalski TE, Infantolino A. Advances in the Treatment of High-Grade Dysplasia and Early Adenocarcinoma of the Esophagus.  Res Staff Physician 49(6): 40-6, 2003
7.    Loren DE, Lewis JD, Kochman ML. Colon Cancer Detection and Prevention.Hem Onc Clin N Am 17: 553-574, 2003
8.    Lipcan MT,  Loren, DE, Palazzo JP, Bibbo MB, Dimarino AJ, Cohen S.  Endosonographic diagnosis of recurrent gastric gastrointestinal stromal tumors associated with Carney’s syndrome, Gastroenterology 2005;128(1):169-74.
9.    Schlansky B, dimarino AJ, Loren D, Infantolino T, Kowalski T, Cohen S. A survey of oesophageal cancer: pathology, stage, and clinical presentation. Aliment Pharmacol Ther 2006: 23, 587-93 
10.    Siddiqui AA, Mitroo P, Kowalski T, Loren D. Endoscopic sphincterotomy with or without cholecystectomy for choledocholithiasis in high-risk surgical patients: A decision Analysis. Aliment Pharmacol Ther 2006;24(7):1059-66.
11.    Siddiqui AA, Loren D, Dudnick R, Kowalski T. Expandable polyester silicon-covered stent for malignant esophageal strictures before neoadjuvant chemoradiation: A pilot study. Dig Dis Sci 2007;52(3):823-9
12.    Kowalski TE, Nathwani RA, Assis D, Salese L, Banwait K, Loren DE. Post-sphincterotomy Transampullary Balloon Dilation Is a Safe and Effective Technique. Dig Dis Sci ; 54(3) 670-4
13.    Hashemi N, Loren DE, Dimarino AJ, Cohen S. Presentation and prognosis of esophageal adenocarcinoma in patients below age 50. Dig Dis Sci, 2009 54 (8):1708–1712
14.    Siddiqi AA, C. Glynn, Loren D, Kowalski T, Self-expanding plastic esophageal stents versus jejunostomy tubes for the maintenance of nutrition during neoadjuvant chemoradiation therapy in patients with esophageal cancer: a retrospective study. Diseases of the Esophagus, 2009 22 (3); 216-222
15.    Fenkel JM, Spodik M, Bheema SS, Infantolino A, Deshmukh SP, Loren DE. Tubercular Pancreatic Abscess Presenting as Fever and Cystic Pancreatic Lesion with Endoscopic Management. Dis Sci (2010) 55:2118–2120
16.    Marks JA. Rao AS. Loren D. Witkiewicz A. Mastrangelo MJ. Berger AC. Malignant melanoma presenting as obstructive jaundice secondary to metastasis to the Ampulla of Vater. Journal of the Pancreas 11(2):173-5, 2010
17.    Loren DE. Azar R. Charles RJ. Dumot JA. Farooq F. Gopal DV. Jaffe DL. Shami VM. Sharma VK. Chak A. Updated guidelines for live endoscopy demonstrations. ASGE CME Programs Committee. Gastrointestinal Endoscopy. 71(7):1105-7, 2010 Jun.
18.    Toll AD, Kowalski T, Loren D, Bibbo M. The Added Value of Molecular Testing in Small Pancreatic Cysts. J Pancreas  2010 Nov 9; 11(6):582-586.
19.    Rogart J, Loren DE, Singu BS, Kowalsk T. Cyst Wall Puncture and Aspiration during EUS-guided Fine Needle Aspiration May Increase the Diagnostic Yield of Mucinous Cysts of the Pancreas. Journal of Clinical Gastroenterology. 45(2):164-9, 2011 Feb. 
20.    Siddiqui AA. Kowalski TE. Shahid H. O'Donnell S. Tolin J. Loren DE. Infantolino A. Hong SK. Eloubeidi MA. False-positive EUS-guided FNA cytology for solid pancreatic lesions. Gastrointestinal Endoscopy. 74(3):535-40, 2011 Sep.
21.    Miller-Samuel S, Rosenberg A, Berger A, Gomella L, Loren D, Morris GJ. BRCA1 and BRCA2 variants of uncertain significance. Part two: Medical management. Semin Oncol. 2011 Oct;38(5):605-11
22.    Siddiqui AA, Mehendiratta V, Loren D, Hong SK, Kowalski T. Fully covered self-expandable metal stents are effective and safe to treat distal malignant biliary strictures, irrespective of surgical resectability status. J Clin Gastroenterol. 2011 Oct;45(9):824-7
23.    Siddiqui AA. Brown LJ. Hong SK. Draganova-Tacheva RA. Korenblit J. Loren DE. Kowalski TE. Solomides C.  Relationship of pancreatic mass size and diagnostic yield of endoscopic ultrasound-guided fine needle aspiration.  Digestive Diseases & Sciences. 56(11):3370-5, 2011 Nov.
24.    Orfanidis NT. Loren DE. Santos C. Kennedy EP. Siddiqui AA. Lavu H. Yeo CJ. Kowalski TE. Extended follow-up and outcomes of patients undergoing pancreaticoduodenectomy for nonmalignant disease. J Gastrointest Surg. 2012 Jan;16(1):80-7
25.    Hong SK, Loren DE, Rogart JN, Siddiqui AA, Sendecki JA, Bibbo M, Coben RM,  Meckes DP, Kowalski TE. Targeted cyst wall puncture and aspiration during EUS-FNA increases the diagnostic yield of premalignant and malignant pancreatic cysts. Gastrointest Endosc  75(4), 775-782, 2012 Apr
26.    Siddiqui AA, Mehendiratta V, Jackson W, Loren DE, Kowalski TE, Eloubeidi MA. Identification of cholangiocarcinoma by using the Spyglass Spyscope system for peroral cholangioscopy and biopsy collection. Clin Gastroenterol Hepatol. 2012 May;10(5):466-71;
27.    Siddiqui AA, Sarkar A, Beltz S, Lewis J, Loren DE, Kowalski TE, Fang J, Hilden K, Adler DG. Placement of fully covered self-expandable metal stents in patients with locally advanced esophageal cancer before neoadjuvant therapy Gastrointest Endoscopy. 76(1):44-51, 2012 Jul.
28.    Siddiqui AA, Fein M, Kowalski TE, Loren DE, Eloubeidi MA. Comparison of the influence of plastic and fully covered metal biliary stents on the accuracy of EUS-FNA for the diagnosis of pancreatic cancer. Dig Dis Sci. 2012 Sep;57(9):2438-45.
29.    Siddiqui AA, Tholey D, Kedika R, Loren DE, Kowalski TE, Eloubeidi MA. Low but significant yield of endosonography in patients with suspected Sphincter of Oddi dysfunction type III with normal imaging studies. J Gastrointestin Liver Dis. 2012 Sep;21(3):271-5
30.    Korenblit J; Anantharaman A; Loren DE; Kowalski TE; Siddiqui AA. The role of endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) for the diagnosis of intra-abdominal lymphadenopathy of unknown origin. Journal of Interventional Gastroenterology. 2(4):172-176, 2012.
31.    Finkelstein SD, Bibbo M, Loren DE, Siddiqui AA, Solomides C, Kowalski TE, Ellsworth E. Molecular analysis of centrifugation supernatant fluid from pancreaticobiliary duct samples can improve cancer detection. Acta Cytol. 2012;56(4):439-47. 
32.    Patel D; Loren D; Kowalski T; Siddiqui AA. Pancreatic tuberculosis mimicking malignancy diagnosed with endoscopic ultrasound-guided fine needle aspiration. Endoscopic Ultrasound. 2(1):38-40, 2013 Jan.
33.    Siddiqui AA, Chaaya A, Shelton C, Marmion J, Kowalski TE, Loren DE, Heller SJ, Haluszka O, Adler DG, Tokar JL. Utility of the short double-balloon enteroscope to perform pancreaticobiliary interventions in patients with surgically altered anatomy in a us multicenter study. Digestive Diseases & Sciences. 58(3):858-64, 2013 Mar.
34.    Beltz S; Sarkar A; Loren DE; Andrel J; Kowalski T; Siddiqui AA. Risk stratification for the development of post-ERCP pancreatitis by sphincter of Oddi dysfunction classification. Southern Medical Journal. 106(5):298-302, 2013 May.
35.    Siddiqui AA, Mehendiratta V, Loren D, Kowalski T, Fang J, Hilden K, Adler DG. Self-expanding metal stents (SEMS) for preoperative biliary decompression in patients with resectable and borderline-resectable pancreatic cancer: outcomes in 241 patients. Dig Dis Sci. 2013 Jun;58(6):1744-50
36.    Siddiqui AA, Kowalski TE, Kedika R, Roy A, Loren DE, Ellsworth E, Adler D, Finkelstein SD. EUS-guided pancreatic fluid aspiration for DNA analysis of KRAS and GNAS mutations for the evaluation of pancreatic cystic neoplasia: a pilot study. Gastrointest Endoscopy 2013. 77(4): 669-670
37.    Kahaleh M; Brijbassie A; Sethi A; Degaetani M; Poneros JM; Loren DE; Kowalski TE; Sejpal DV; Patel S; Rosenkranz L; mcnamara KN; Raijman I; Talreja JP; Gaidhane M; Sauer BG; Stevens PD. Multicenter trial evaluating the use of covered self-expanding metal stents in benign biliary strictures: time to revisit our therapeutic options?. Journal of Clinical Gastroenterology. 47(8):695-9, 2013 Sep.
38.    Shahid, H, Avik S, Sharma A, Kowalski TE, Cox K, Siddiqui A, Loren DE, Sharma A, Laing P, Birch M, Adler DG.  Stage of stage of hilar cholangiocarcinoma predicts recurrence of biliary obstruction in patients with metal stents. Clin Gastroenterol Hepatol. 2013 Sep;11(9):1169-73
39.    Siddiqui A, Dewitt JM , Strongin A, Singh H, Jordan S, Loren DE,  Kowalski TE, Eloubeidi MA.  Outcomes of EUS-guided drainage of debris-containing pancreatic pseudocysts by using combined endoprosthesis and a nasocystic drain. Gastrointest Endosc, 2013 Oct;78(4):589-95
40.    Petersen BT; Kahaleh M; Kozarek RA; Loren D; Gupta K; Kowalski T; Freeman M; Chen YK; Branch MS; Edmundowicz S; Gluck M; Binmoeller K; Baron TH; Shah RJ; Kinney T; Ross W; Jowell P; Carr-Locke D. A multicenter, prospective study of a new fully covered expandable metal biliary stent for the palliative treatment of malignant bile duct obstruction. Gastroenterology Research & Practice. 2013:642428, 2013
41.    Kahaleh M; Talreja JP; Loren DE; Kowalski TE; Poneros JM; Degaetani M; Raijman I; Sejpal DV; Patel S; Rosenkranz L; mcnamara KN; Brijbassie A; Wang AY; Gaidhane M; Sethi A; Stevens PD. Evaluation of a fully covered self-expanding metal stent with flared ends in malignant biliary obstruction: a multicenter study. Journal of Clinical Gastroenterology. 47(10):e96-100, 2013 Nov-Dec. 
42.    Siddiqui AA; Jones E; Andrade D; Shah A; Kowalski TE; Loren DE; Chipitsyna G; Arafat HA. Osteopontin splice variant as a potential marker for metastatic disease in pancreatic adenocarcinoma. Journal of Gastroenterology & Hepatology. 29(6):1321-7, 2014 Jun.
43.    Siddiqui AA; Easler J; Strongin A; Slivka A; Kowalski TE; Muddana V; Chennat J; Baron TH; Loren DE; Papachristou GI. Hydrogen peroxide-assisted endoscopic necrosectomy for walled-off pancreatic necrosis: A dual center pilot experience. Dig dissci. 59(3):687-90, 2014 Mar.
44.    Shahid H; Korenblit J; Kowalski T; Loren DE; Siddiqui AA Novel application of electrohydraulic lithotripsy probe in managing a refractory cystic duct bile leak. Gastrointestinal Endoscopy. 80(4):744-5, 2014 Oct.
45.    Finkelstein SD; Bibbo M; Kowalski TE; Loren DE; Siddiqui AA; Solomides C; Ellsworth E. Mutational analysis of cytocentrifugation supernatant fluid from pancreatic solid mass lesions. Diagnostic Cytopath. 42(8):719-25, 2014 Aug. 
46.    Moukarzel LA; Sarosiek K; Kang C; Krazwitz S; Loren D; Pucci MJ. An approach to the diagnosis and treatment of gastrointestinal bleeding secondary to jejunal diverticulosis. American Surgeon. 81(3):E93-5, 2015 Mar.
47.    Siddiqui AA; Shahid H; Shah A; Khurana T; Huntington W; Ghumman SS; Loren DE; Kowalski TE; Laique S; Hayat U; Eloubeidi MA. High risk of acute pancreatitis after endoscopic ultrasound-guided fine needle aspiration of side branch intraductal papillary mucinous neoplasms. Endoscopic Ultrasound. 4(2):109-14, 2015 Apr-Jun.
48.    Adler DG; Cox K; Milliken M; Taylor LJ; Loren D; Kowalski T; Francis G; Laique SN; Siddiqui A. A large multicenter study analysis of adverse events associated with single operator cholangiopancreatoscopy. Minerva Gastroenterol e Dietologica. 61(4):179-84, 2015 Dec.  
49.    Loren D, Kowalski T, Siddiqui A, Jackson S, Toney N, Malhotra N, Haddad N. Influence of integrated molecular pathology test results on real-world management decisions for patients with pancreatic cysts: analysis of data from a national registry cohort. Diagn Pathol. 2016 Jan 20;11:5
50.    Taunk P, Cosgrove N, Loren DE, Kowalski T, Siddiqui AA. Endoscopic ultrasound-guided gastroenterostomy using a lumen-apposing self-expanding metal stent for decompression of afferent loop obstruction. Endoscopy 47 395-6
51.    Siddiqui AA; Patel D; Kaplan J; Zabolotsky AH; Loren D; Kowalski T; Ghumman SS; Adler DG; Munigal S; Hayat U; Eloubeidi MA.  A Trial of Rectal Indomethacin to Prevent Post-ERCP Pancreatitis in Patients with Suspected Type 3 Sphincter of Oddi Dysfunction. Dig Dis Sci. 60(8):2509-15, 2015 Aug.
52.    Sharaiha RZ; defilippis EM; Kedia P; Gaidhane M; Boumitri C; Lim HW; Han E; Singh H; Ghumman SS; Kowalski T; Loren D; Kahaleh M; Siddiqui A. Metal versus plastic for pancreatic pseudocyst drainage: Clinical outcomes and success. Gastrointestinal Endoscopy. 82(5):822-7, 2015 Nov.
53.    Shahid H, Loren DE. Photodynamic Therapy for Perihilar Cholangiocarcinoma; Practical Gastro V4; 42-44 (2016)
54.    Korenblit J; Tholey DM; Tolin J; Loren D; Kowalski T; Adler DG; Davolos J; Siddiqui AA. Effect of the time of day and queue position in the endoscopic schedule on the performance characteristics of endoscopic ultrasound-guided fine-needle aspiration for diagnosing pancreatic malignancies. Endoscopic Ultrasound. 5(2):78-84, 2016 Mar-Apr. 
55.    Siddiqui AA, Adler DG, Nieto J, Shah JN, Binmoeller KF, Kane S, Yan L, Laique SN, Kowalski T, Loren DE, Taylor LJ, Munigala S, Bhat YM. EUS-guided drainage of peripancreatic fluid collections and necrosis by using a novel lumen-apposing stent: a large retrospective, multicenter U.S. experience (with videos). Gastrointest Endosc. 2016 Apr;83(4):699-707.
56.    Korenblit J; Tholey DM; Tolin J; Loren D; Kowalski T; Adler DG; Davolos J; Siddiqui AA. Effect of the time of day and queue position in the endoscopic schedule on the performance characteristics of endoscopic ultrasound-guided fine-needle aspiration for diagnosing pancreatic malignancies. Endoscopic Ultrasound. 5(2):78-84, 2016 Mar-Apr.
57.    Sharaiha RZ; Kumta NA; defilippis EM; Dimaio CJ; Gonzalez S; Gonda T; Rogart J; Siddiqui A; Berg PS; Samuels P; Miller L; Khashab MA; Saxena P; Gaidhane MR; Tyberg A; Teixeira J; Widmer J; Kedia P; Loren D; Kahaleh M; Sethi. A large multicenter experience with endoscopic suturing for management of gastrointestinal defects and stent anchorage in 122 patients: A retrospective review. Journal of Clinical Gastroenterology. 50(5):388-92, 2016 May-Jun.
58.    Shnitser A; Halegoua-demarzio D; Loren DE.  Primary pancreatic lymphoma presenting as acute pancreatitis. Gastroenterology & Hepatology. 12(7):456-8, 2016 Jul.
59.    Cosgrove N; Siddiqui AA; Adler DG; Shahid H; Sarkar A; Sharma A; Kowalski TE; Loren D; Warndorf M; Chennat J; Munigala S; Papachristou GI. A comparison of bilateral side-by-side metal stents deployed above and across the sphincter of Oddi in the management of malignant hilar biliary obstruction.  Journal of Clinical Gastroenterology. , J Clin Gastroenterol. 2017 Jul;51(6):528-533
60.    Kowalski T; Siddiqui A; Loren D; Mertz HR; Mallat D; Haddad N; Malhotra N; Sadowski B; Lybik MJ; Patel SN; Okoh E; Rosenkranz L; Karasik M; Golioto M; Linder J; Catalano MF; Al-Haddad MA. Management of patients with pancreatic cysts: analysis of possible false-negative cases of malignancy. Journal of Clinical Gastroenterology. 50(8):649-57, 2016 Sep.
61.    Yang JF, Sharaiha RZ, Francis G, Karia K, Kistler CA, Laique SN, Hasan R, Gaidhane M, Tyberg A, Kahaleh M, Kowalski TE, Loren DE, Siddiqui A. Diagnostic accuracy of directed cholangioscopic biopsies and confocal laser endomicroscopy in cytology-negative indeterminate bile duct stricture: A multicenter comparison trial. Minerva Gastroenterol Dietol. 2016 Sep;62(3):227-33.
62.    Yang J, Siddiqui AA, Kowalski TE, Loren DE, Khalid A, Soomro A, Mazhar SM, Rosé J, Isby L, Kahaleh M, Kalra A, Sarkisian AM, Kumta NA, Nieto J, Sharaiha RZ. Esophageal stent fixation with endoscopic suturing device improves clinical outcomes and reduces complications in patients with locally advanced esophageal cancer prior to neoadjuvant therapy: A large multicenter experience. Surg Endosc. 2017 Mar;31(3):1414-1419
63.    Yang J, Siddiqui AA, Kowalski TE, Loren DE, Khalid A, Soomro A, Mazhar SM, Rosé J, Isby L, Kahaleh M, Kalra A, Sarkisian AM, Kumta NA, Nieto J, Sharaiha RZ. Erratum to: Esophageal stent fixation with endoscopic suturing device improves clinical outcomes and reduces complications in patients with locally advanced esophageal cancer prior to neoadjuvant therapy: A large multicenter experience. Surg Endosc. 2017 Mar;31(3):1420. Doi: 10.1007/s00464-016-5259-1
64.    Siddiqui AA, Kowalski TE, Loren DE, Khalid A, Soomro A, Mazhar SM, Isby L, Kahaleh M, Karia K, Yoo J, Ofosu A, Ng B, Sharaiha RZ. Fully covered self-expanding metal stents versus lumen-apposing fully covered self-expanding metal stent versus plastic stents for endoscopic drainage of pancreatic walled-off necrosis: Clinical outcomes and success. Gastrointest Endosc. 2017 Apr;85(4):758-765
65.    Xu MM, Yin S, Siddiqui AA, Salem RR, Schrope B, Sethi A, Poneros JM, Gress FG, Genkinger JM, Do C, Brooks CA, Chabot JA, Kluger MD, Kowalski T, Loren DE, Aslanian H, Farrell JJ, Gonda TA. Comparison of the diagnostic accuracy of three current guidelines for the evaluation of asymptomatic pancreatic cystic neoplasms. Medicine (Baltimore). 2017 Sep;96(35):e7900
66.    El Chafic AH, Loren D, Siddiqui A, Mounzer R, Cosgrove N, Kowalski T. Comparison of FNA and fine-needle biopsy for EUS-guided sampling of suspected GI stromal tumors. Gastrointest Endosc. 2017 Sep;86(3):510-515
67.    Forsberg F, Stanczak M, Lyshchik A, Loren D, O'Kane P, Siddiqui A, Kowalski TE, Miller C, Fox T, Liu JB, Eisenbrey JR. Subharmonic and endoscopic contrast imaging of pancreatic masses: A pilot study. J Ultrasound Med. 2018 Jan;37(1):123-129
68.    Naveed M, Siddiqui AA, Kowalski TE, Loren DE, Khalid A, Soomro A, Mazhar SM, Yoo J, Hasan R, Yalamanchili S, Tarangelo N, Taylor LJ, Adler DG. A Multicenter comparative trial of a novel EUS-guided core biopsy needle (SharkcoreTM) with the 22-gauge needle in patients with solid pancreatic mass lesions. Endosc Ultrasound. 2018 Jan-Feb;7(1):34-40. 
69.    Bukhari M, Kowalski T, Nieto J, Kunda R, Ahuja NK, Irani S, Shah A, Loren D, Brewer O, Sanaei O, Fayad L, Chen YI, Ngamruengphong S, Kumbhari V, Singh V, Aridi HD, Khashab MA. An international, multicenter, comparative trial of EUS-guided gastrogastrostomy-assisted ERCP versus enteroscopy-assisted ERCP in patients with Roux-en-Y gastric bypass anatomy. Gastrointest Endosc. 2018 May 3 .gie.2018.04.2356. 
70.    Staub J, Siddiqui A, Taylor LJ, Loren D, Kowalski T, Adler DG ERCP performed through previously placed duodenal stents: A multicenter retrospective study of outcomes and adverse events. Gastrointest Endosc. 2018 Jun;87(6):1499-1504.
71.    Wani S, Keswani RN, Han S, Eagaard EM, Hall M, Simon V, Abidi WM. Banerjee S, Baron TH, Bartel M, Bowman E, Brauer BC, Buscaglia JM, Carlin L Chak A, Chatrath H, Choudhary A Confer B, Coté GA, Das KK, dimaio CJ, Dries AM, Edmundowicz SA, elchafic AH,  Hajj IA, Ellert S, Ferreira J, Gamboa A, Gan IS, Gangarosa L, Gannavarapu B, Gordon S, Guda NM, Hammad HT, Harris C, Jalaj S, Jowell PS, Kenshi S, Klapman J, Kochman ML,. Komanduri S, Lang G, Lee LS, Loren DE, Lukens FJ, lmullady D, Muthusamy VR, Nett AS, Olyaee MS, Pakseresht K, Perera P, Pfau P, Piraka C, Poneros JM, Rastogi A, Razzak A, Riff B, Saligram S, Scheiman JM, Schuster I, Shah RJ, Sharma R, Spaete JP, Singh A, Sohail M, Sreenarasimhaiah J, Stevens T, Tabibian JT, Tzimas D, Uppa DS, Urayama S, Vitterbo D, Wang AY, Wassef W, Yachimski P, Zepeda-Gomez A, Zuchelli T, Early D. Competence in endoscopic ultrasound and endoscopic retrograde cholangiopancreatography, from training through independent practice. Gastroenterology. 2018 Nov;155(5):1483-1494.e7. PMID: 30056094
72.    Powers PC, Siddiqui A, Sharaiha RZ, Yang G, Dawod E, Novikov AA, Javia A, Edirisuriya C, Noor A, Mumtaz T, Iqbal U, Loren DE, Kowalski TE, Cosgrove N, Alicea Y, Tyberg A, Andalib I, Kahaleh M, Adler DG. Discontinuation of proton pump inhibitor use reduces the number of endoscopic procedures required for resolution of walled-off pancreatic necrosis. Endosc Ultrasound. 2019 May-Jun;8(3):194-198. PMID: 30719997
73.    Haseeb A, Siddiqui A, Taylor LJ, Mills A, Kowalski TE, Loren DE, Dahmus J, Yalamanchili S, Cao C, Canakis A, Mumtaz T, Parikh M, Adler DG. Use of fully covered self-expanding metal stents for benign biliary etiologies: A large multi-center experience. Minerva Gastroenterol Dietol. 2018 Jun;64(2):111-116.
74.    Siddiqui A, Kunda R, Tyberg A, Arain MA, Noor A, Mumtaz T, Iqbal U, Loren DE, Kowalski TE, Adler DG, Saumoy M, Gaidhane M, Mallery S, Christiansen EM, Nieto J, Kahaleh M. Three-way comparative study of endoscopic ultrasound-guided transmural gallbladder drainage using lumen-apposing metal stents versus endoscopic transpapillary drainage versus percutaneous cholecystostomy for gallbladder drainage in high-risk surgical patients with acute cholecystitis: Clinical outcomes and success in an International, multicenter study. Surg Endosc. 2019 Apr;33(4):1260-1270. PMID: 30209610
75.    Wani S, Han S, Simon V, Hall M, Early D, Aagaard E, Abidi WM, Banerjee S, Baron TH, Bartel M, Bowman E, Brauer BC, Buscaglia JM, Carlin L, Chak A, Chatrath H, Choudhary A, Confer B, Coté GA, Das KK, dimaio CJ, Dries AM, Edmundowicz SA, El Chafic AH, El Hajj I, Ellert S, Ferreira J, Gamboa A, Gan IS, Gangarosa L, Gannavarapu B, Gordon SR, Guda NM, Hammad HT, Harris C, Jalaj S, Jowell P, Kenshil S, Klapman J, Kochman ML, Komanduri S, Lang G, Lee LS, Loren DE, Lukens FJ, Mullady D, Muthusamy RV, Nett AS, Olyaee MS, Pakseresht K, Perera P, Pfau P, Piraka C, Poneros JM, Rastogi A, Razzak A, Riff B, Saligram S, Scheiman JM, Schuster I, Shah RJ, Sharma R, Spaete JP, Singh A, Sohail M, Sreenarasimhaiah J, Stevens T, Tabibian JH, Tzimas D, Uppal DS, Urayama S, Vitterbo D, Wang AY, Wassef W, Yachimski P, Zepeda-Gomez S, Zuchelli T, Keswani RN. Setting minimum standards for training in EUS and ERCP: Results from a prospective multicenter study evaluating learning curves and competence among advanced endoscopy trainees. Gastrointest Endosc 2019 Jun;89(6):1160-1168.PMID: 30738985
76.    Kumta NA, Tyberg A, Bhagat VH, Siddiqui AA, Kowalski TE, Loren DE, Desai AP, Sarkisian AM, Brown EG, Karia K, Gaidhane M, Kedia P, Tarnasky PR, Patel U, Adler D, Taylor LJ, Petrone M, Arcidiacono P, Yachimski PS, Weine D, Sundararajan S, Deprez PH, Mouradides C, Ho S, Javed S, Easler JJ, Raijman I, Vazquez-Sequeiros E, Sawhney M, Berzin TM, Kahaleh M. EUS-guided drainage of pancreatic fluid collections using lumen apposing metal stents: An international, multicenter experience. Dig Liver Dis. 2019 Nov;51(11):1557-1561 PMID: 31272934
77.    Novikov A, Kowalski TE, Loren DE. Practical Management of Indeterminate Biliary Strictures. Gastrointest Endosc Clin N Am. 2019 Apr;29(2):205-214. PMID: 30846149
78.    Thomas S, Siddiqui AA, Taylor LJ, Parbhu S, Cao C, Loren D, Kowalski T, Adler DG. Fully-covered esophageal stent migration rates in benign and malignant disease: A multicenter retrospective study. Endosc Int Open. 2019 Jun;7(6):E751-E756. Doi: 10.1055/a-0890-3284. Epub 2019 May 17. PMID: 31157292;
79.    Staub J, Siddiqui A, Murphy M, Lam R, Parikh M, Pleskow D, Papachristou G, Sharaiha R, Iqbal U, Loren D, Kowalski T, Noor A, Mumtaz T, Yasuda I, Thomas S, Hsaeeb A, Herrick J, Greene T, Adler DG. Unilateral versus bilateral hilar stents for the treatment of cholangiocarcinoma: A multicenter international study. Ann Gastroenterol 2020; 33: 202-9. 2020;33(2):202-209. Doi: 10.20524/aog.2020.0451
80.    Shinn B, Boortalary T, Raijman I, Nieto J, Khara HS, Kumar SV, Confer B, Diehl DL, El Halabi M, Ichkhanian Y, Runge T, Kumbhari V, Khashab M, Tyberg A, Shahid H, Sarkar A, Gaidhane M, Bareket R, Kahaleh M, Piraka C, Zuchelli T, Law R, Sondhi A, Kedia P, Robbins J, Calogero C, Bakhit M, Chiang A, Schlachterman A, Kowalski T, Loren D. Maximizing success in single-session eus-directed transgastric ERCP: A retrospective cohort study to identify predictive factors of stent migration. Gastrointest Endosc 2021; 94: 727-32
81.    Nieto J, Mekaroonkamol P, Shah R, Khashab MA, Loren DE, Waxman I, Edmundowicz SA, Willingham FF. Electrocautery-enhanced lumen-apposing metal stents in the management of symptomatic pancreatic fluid collections: Results from the multicenter prospective pivotal trial. J Clin Gastroenterol. 2021 Apr 23. Doi: 10.1097/MCG.0000000000001545. Online ahead of print. PMID: 33899781
82.    Siddiqui A, Naveed M, Basha J, Lakhtakia S, Nieto J, Shah J, Binmoeller K, Murphy M, Talukdar R, Ramchandani MK, Nabi Z, Gupta R, Kowalski TE, Loren DE, Sharaiha RZ, Kahaleh M, Eyck PT, Noor A, Mumtaz T, Kalalala R, Reddy ND, Adler DG. International, multicenter retrospective trial comparing the efficacy and safety of bi-flanged versus lumen-apposing metal stents for endoscopic drainage of walled-off pancreatic necrosis. Ann Gastroenterol. 2021;34(2):273-281. Doi: 10.20524/aog.2021.0570. Epub 2021 Jan 4.
83.    Runge TM, Chiang AL, Kowalski TE, James TW, Baron TH, Nieto J, Diehl DL, Krafft MR, Nasr JY, Kumar V, Khara HS, Irani S, Patel A, Law RJ, Loren DE, Schlachterman A, Hsueh W, Confer BD, Stevens TK, Chahal P, Al-Haddad MA, Mir FF, Pleskow DK, Huggett MT, Paranandi B, Trindade AJ, Brewer-Gutierrez OI, Ichkhanian Y, Dbouk M, Kumbhari V, Khashab MA. Endoscopic ultrasound-directed transgastric ERCP (EDGE): a retrospective multicenter study. Endoscopy. 2021 Jun;53(6):611-618. Doi: 10.1055/a-1254-3942. Epub 2020 Sep 3. PMID: 32882722
84.    Nerwal T, Goetz A, Nevler A, Barmettler G, Solomides C, Kowalski T, Loren D, Lavu H, Yeo CJ, Hookim K, Winter JM. Accuracy of cytopathology evaluation for resected benign and malignant pancreatic disease. J Surg Oncol. 2021 Sep;124(3):343-353. Doi: 10.1002/jso.26526. Epub 2021 Jun 13. PMID: 34120342
85.    Stassen PMC, de Jonge PJF, Bruno MJ, Koch AD, Trindade AJ, Benias PC, Sejpal DV, Siddiqui UD, Chapman CG, Villa E, Tharian B, Inamdar S, Hwang JH, Barakat MT, Andalib I, Gaidhane M, Sarkar A, Shahid H, Tyberg A, Binmoeller K, Watson RR, Nett A, Schlag C, Abdelhafez M, Friedrich-Rust M, Schlachterman A, Chiang AL, Loren D, Kowalski T, Kahaleh M.Safety and efficacy of a novel resection system for direct endoscopic necrosectomy of walled-off pancreas necrosis: a prospective, international, multicenter trial. Gastrointest Endosc 2022 Mar;95(3):471-479. Epub 2021 Sep 22. PMID: 34562471
86.    Holmes I, Shinn B, Mitsuhashi S, Boortalary T, Bashir M, Kowalski T, Loren D, Kumar A, Schlachterman A, Chiang A. Prediction and management of bleeding during endoscopic necrosectomy for pancreatic walled-off necrosis: results of a large retrospective cohort at a tertiary referral center Gastrointest Endosc. 2022 Mar;95(3):482-488. doi: 10.1016/j.gie.2021.10.015. Epub 2021 Oct 19.PMID: 34678298
87.    Response to Comment on Prediction and management of bleeding during endoscopic necrosectomy for pancreatic walled-off necrosis: results of a large retrospective cohort at a tertiary referral center. Holmes I, Shinn B, Mitsuhashi S, Boortalary T, Bashir M, Kowalski T, Loren D, Kumar A, Schlachterman A, Chiang A. Gastrointest Endosc. 2022 Apr;95(4):815-816. doi: 10.1016/j.gie.2021.12.012.
 

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