Find your care

Our expert interventional endoscopy team includes skilled physicians who perform minimally invasive endoscopic procedures to treat GI disorders. Call 310-825-2631 to connect with a specialist.

Find a provider
Request an appointment
Our locations

Research Papers - Peer Reviewed - This is Not An Exhaustive List 

Abstracts - This is Not An Exhaustive List

View PubMed publications for:

Research Papers - Peer Reviewed

2021

2020

2019

2018

2016

2015

  • Wolf WA, Pasricha S, Cotton C, Li N, Triadafilopoulos G, Muthusamy VR, Chmielewski GW, Corbett FS, Camara DS, Lightdale CJ, Wolfsen H, Chang KJ, Overholt BF, Pruitt RE, Ertan A, Komanduri S, Infantolino A, Rothstein RI, Shaheen NJ. Incidence of Esophageal Adenocarcinoma and Causes of Mortality After Radiofrequency Ablation of Barrett's Esophagus. Gastroenterology. 2015.
  • Law R, Das A, Gregory D, Komanduri S, Muthusamy R, Rastogi A, Vargo J, Wallace MB, Raju GS, Mounzer R, Klapman J, Shah J, Watson R, Wilson R, Edmundowicz SA, Wani S. Endoscopic resection is cost-effective compared with laparoscopic resection in the management of complex colon polyps: an economic analysis. Gastrointest Endosc. 2015 Dec 1. pii: S0016-5107(15)03084-9. doi: 10.1016/j.gie.2015.11.014. [Epub ahead of print]PMID: 26608129
  • Wani S, Hall M, Wang AY, DiMaio CJ, Muthusamy VR, Keswani RN, Brauer BC, Easler JJ, Yen RD, El Hajj I, Fukami N, Ghassemi KF, Gonzalez S, Hosford L, Hollander TG, Wilson R, Kushnir VM, Ahmad J, Murad F, Prabhu A, Watson RR, Strand DS, Amateau SK, Attwell A, Shah RJ, Early D, Edmundowicz SA, Mullady D. Variation in learning curves and competence for ERCP among advanced endoscopy trainees by using cumulative sum analysis. Gastrointest Endosc. 2015 Oct 26. pii: S0016-5107(15)03038-2. doi: 10.1016/j.gie.2015.10.022. [Epub ahead of print]
  • Ge PS, Hamerski CM, Watson RR, Komanduri S, Cinnor BB, Bidari K, Klapman JB, Lin CL, Shah JN, Wani S, Donahue TR, Muthusamy VR. Plastic biliary stent patency in patients with locally advanced pancreatic adenocarcinoma receiving downstaging chemotherapy. Gastrointest Endosc. 2015 Feb;81(2):360-6. doi: 10.1016/j.gie.2014.08.020. Epub 2014 Oct 16. PMID: 25442083
  • Kim S, Hamerski C, Ghassemi K, Shah J, Bhat Y, Klapman J, Komanduri S, Keswani RN, Bidari K, Wani S, Watson RR, Muthusamy VR. The Clinical Utility of Evaluating the Luminal Upper Gastrointestinal Tract During Linear Endoscopic Ultrasonography. J Clin Gastroenterol. 2015 Oct 23. [Epub ahead of print]
  • Pasricha S, Cotton C, Hathorn KE, Li N, Bulsiewicz WJ, Wolf WA, Muthusamy VR, Komanduri S, Wolfsen HC, Pruitt RE, Ertan A, Chmielewski GW, Shaheen NJ. Effects of the Learning Curve on Efficacy of Radiofrequency Ablation for Barrett's Esophagus. Gastroenterology. 2015.
  • Ge PS, Hamerski CM, Watson RR, Komanduri S, Cinnor BB, Bidari K, Klapman JB, Lin CL, Shah JN, Wani S, Donahue TR, Muthusamy VR. Plastic biliary stent patency in patients with locally advanced pancreatic adenocarcinoma receiving downstaging chemotherapy. Gastrointest Endosc. 2015;81(2):360-366.
  • Wani S, Hall M, Keswani RN, Aslanian HR, Casey B, Burbridge R, Chak A, Chen AM, Cote G, Edmundowicz SA, Faulx AL, Hollander TG, Lee LS, Mullady D, Murad F, Muthusamy VR, Pfau PR, Scheiman JM, Tokar J, Wagh MS, Watson R, Early D. Variation in Aptitude of Trainees in Endoscopic Ultrasonography, Based on Cumulative Sum Analysis. Clin Gastroenterol Hepatol. 2015 Jul;13(7):1318-1325.e2. doi: 10.1016/j.cgh.2014.11.008. Epub 2014 Nov 14.
  • Gaddam S, Ge PS, Keach JW, Mullady D, Fukami N, Edmundowicz SA, Azar RR, Shah RJ, Murad FM, Kushnir VM, Watson RR, Ghassemi KF, Sedarat A, Komanduri S, Jaiyeola DM, Brauer BC, Yen RD, Amateau SK, Hosford L, Hollander T, Donahue TR, Schulick RD, Edil BH, McCarter M, Gajdos C, Attwell A, Muthusamy VR, Early DS, Wani S. Suboptimal accuracy of carcinoembryonic antigen in differentiation of mucinous and nonmucinous pancreatic cysts: results of a large multicenter study. Gastrointest Endosc. 2015 Dec;82(6):1060-9. doi: 10.1016/j.gie.2015.04.040. Epub 2015 Jun 12.
  • Makker J, Muthusamy VR, Watson R, Sedarat A. Electrohydraulic lithotripsy and removal of a gallstone obstructing the duodenum: Bouveret syndrome. Gastrointest Endosc. 2015 Apr;81(4):1021-2. doi: 10.1016/j.gie.2014.10.045.
  • ASGE Standards of Practice Committee, Muthusamy VR, Lightdale JR, Acosta RD, Chandrasekhara V, Chathadi KV, Eloubeidi MA, Fanelli RD, Fonkalsrud L, Faulx AL, Khashab MA, Saltzman JR, Shaukat A, Wang A, Cash B, DeWitt JM. The role of endoscopy in the management of GERD.Gastrointest Endosc. 2015;81(6):1305-1310.

2014

  • Wani S, Muthusamy VR, Komanduri S. EUS-guided tissue acquisition: an evidence-based approach (with videos). Gastrointest Endosc. 2014;80(6):939-959 e937.
  • van Hooft JE, van Halsema EE, Vanbiervliet G, Beets-Tan RG, DeWitt JM, Donnellan F, Dumonceau JM, Glynne-Jones RG, Hassan C, Jimenez-Perez J, Meisner S, Muthusamy VR, Parker MC, Regimbeau JM, Sabbagh C, Sagar J, Tanis PJ, Vandervoort J, Webster GJ, Manes G, Barthet MA, Repici A, European Society of Gastrointestinal Endoscopy. Self-expandable metal stents for obstructing colonic and extracolonic cancer: European Society of Gastrointestinal Endoscopy (ESGE) Clinical Guideline. Endoscopy. 2014;46(11):990-1053.
  • Pasricha S, Bulsiewicz WJ, Hathorn KE, Komanduri S, Muthusamy VR, Rothstein RI, Wolfsen HC, Lightdale CJ, Overholt BF, Camara DS, Dellon ES, Lyday WD, Ertan A, Chmielewski GW, Shaheen NJ. Durability and predictors of successful radiofrequency ablation for Barrett's esophagus. Clin Gastroenterol Hepatol. 2014;12(11):1840-1847 e1841.
  • Kaushal NK, Chang K, Lee JG, Muthusamy VR. Using efficiency analysis and targeted intervention to improve operational performance and achieve cost savings in the endoscopy center. Gastrointest Endosc. 2014;79(4):637-645.
  • Hwang JH, Shergill AK, Acosta RD, Chandrasekhara V, Chathadi KV, Decker GA, Early DS, Evans JA, Fanelli RD, Fisher DA, Foley KQ, Fonkalsrud L, Jue T, Khashab MA, Lightdale JR, Muthusamy VR, Pasha SF, Saltzman JR, Sharaf R, Cash BD, American Society for Gastrointestinal E. The role of endoscopy in the management of variceal hemorrhage. Gastrointest Endosc. 2014;80(2):221-227.
  • Nguyen AH, Toste PA, Farrell JJ, Clerkin BM, Williams J, Muthusamy VR, Watson RR, Tomlinson JS, Hines OJ, Reber HA, Donahue TR. Current recommendations for surveillance and surgery of intraductal papillary mucinous neoplasms may overlook some patients with cancer. J Gastrointest Surg. 2015 Feb;19(2):258-65. doi: 10.1007/s11605-014-2693-z. Epub 2014 Nov 6. PMID:25373706
  • Watson RR, Hamerski CM, Muthusamy V. Piercing of the ampulla via the stent-in-stent biliary metal stent technique. Gastrointest Endosc. 2015 Feb;81(2):460-1. doi: 10.1016/j.gie.2014.05.299. Epub 2014 Jun 28. No abstract available.PMID:24981804

2013

  • Kim S, Muthusamy VR. Prophylactic erythromycin in acute upper gastrointestinal bleeding: moving forward in improving endoscopic efficacy. Saudi J Gastroenterol. 2013;19(5):193-194.
  • Ge PS, Watson RR, Chen DC, Muthusamy VR. Delayed Migration of a WallFlex Enteral Stent Resulting in Jejunal Perforation. Case Rep Gastrointest Med. 2013;2013:652597.
  • ASGE Standards of Practice Committee, Fisher DA, Shergill AK, Early DS, Acosta RD, Chandrasekhara V, Chathadi KV, Decker GA, Evans JA, Fanelli RD, Foley KQ, Fonkalsrud L, Hwang JH, Jue T, Khashab MA, Lightdale JR, Muthusamy VR, Pasha SF, Saltzman JR, Sharaf R, Cash BD. Role of endoscopy in the staging and management of colorectal cancer. Gastrointest Endosc. 2013;78(1):8-12.
  • ASGE Standards of Practice Committee, Early DS, Acosta RD, Chandrasekhara V, Chathadi KV, Decker GA, Evans JA, Fanelli RD, Fisher DA, Fonkalsrud L, Hwang JH, Jue TL, Khashab MA, Lightdale JR, Muthusamy VR, Pasha SF, Saltzman JR, Sharaf RN, Shergill AK, Cash BD. Adverse events associated with EUS and EUS with FNA. Gastrointest Endosc. 2013;77(6):839-843.
  • ASGE Standards of Practice Committee, Chandrasekhara V, Early DS, Acosta RD, Chathadi KV, Decker GA, Evans JA, Fanelli RD, Fisher DA, Foley KQ, Fonkalsrud L, Hwang JH, Jue T, Khashab MA, Lightdale JR, Muthusamy VR, Pasha SF, Saltzman JR, Sharaf R, Shergill AK, Cash BD. Modifications in endoscopic practice for the elderly. Gastrointest Endosc. 2013;78(1):1-7.

2012

  • Samarasena JB, Muthusamy VR, Jamal MM. Split-dosed MiraLAX/Gatorade is an effective, safe, and tolerable option for bowel preparation in low-risk patients: a randomized controlled study. Am J Gastroenterol. 2012;107(7):1036-1042.
  • Samarasena JB, Chu E, Muthusamy VR. An African American man with dysphagia: a unique initial presentation of sarcoidosis. Endoscopy. 2012;44 Suppl 2 UCTN:E63-64.
  • Iwashita T, Nakai Y, Lee JG, Park do H, Muthusamy VR, Chang KJ. Newly-developed, forward-viewing echoendoscope: a comparative pilot study to the standard echoendoscope in the imaging of abdominal organs and feasibility of endoscopic ultrasound-guided interventions. J Gastroenterol Hepatol. 2012;27(2):362-367.
  • Iwashita T, Lee JG, Shinoura S, Nakai Y, Park DH, Muthusamy VR, Chang KJ. Endoscopic ultrasound-guided rendezvous for biliary access after failed cannulation. Endoscopy. 2012;44(1):60-65.
  • Iwashita T, Lee JG, Nakai Y, Samarasena JB, Park do H, Muthusamy VR, Chang KJ. Successful management of perforation during cystogastrostomy with an esophageal fully covered metallic stent placement. Gastrointest Endosc. 2012;76(1):214-215.

2011

  • Shaheen NJ, Overholt BF, Sampliner RE, Wolfsen HC, Wang KK, Fleischer DE, Sharma VK, Eisen GM, Fennerty MB, Hunter JG, Bronner MP, Goldblum JR, Bennett AE, Mashimo H, Rothstein RI, Gordon SR, Edmundowicz SA, Madanick RD, Peery AF, Muthusamy VR, Chang KJ, Kimmey MB, Spechler SJ, Siddiqui AA, Souza RF, Infantolino A, Dumot JA, Falk GW, Galanko JA, Jobe BA, Hawes RH, Hoffman BJ, Sharma P, Chak A, Lightdale CJ. Durability of radiofrequency ablation in Barrett's esophagus with dysplasia. Gastroenterology. 2011;141(2):460-468.
  • Muthusamy VR, Sharma P. Diagnosis and management of Barrett's esophagus: What's next? Gastrointest Endosc Clin N Am. 2011;21(1):171-181.
  • Lee RH, Tang RS, Muthusamy VR, Ho SB, Shah NK, Wetzel L, Bain AS, Mackintosh EE, Paek AM, Crissien AM, Saraf LJ, Kalmaz DM, Savides TJ. Quality of colonoscopy withdrawal technique and variability in adenoma detection rates (with videos). Gastrointest Endosc. 2011;74(1):128-134.
  • Hamerski CM, Lane JS, Muthusamy VR. Indolent primary aortoduodenal fistula presenting as iron deficiency anemia. Clin Gastroenterol Hepatol. 2011;9(12):A26.

2009

  • Shaheen NJ, Sharma P, Overholt BF, Wolfsen HC, Sampliner RE, Wang KK, Galanko JA, Bronner MP, Goldblum JR, Bennett AE, Jobe BA, Eisen GM, Fennerty MB, Hunter JG, Fleischer DE, Sharma VK, Hawes RH, Hoffman BJ, Rothstein RI, Gordon SR, Mashimo H, Chang KJ, Muthusamy VR, Edmundowicz SA, Spechler SJ, Siddiqui AA, Souza RF, Infantolino A, Falk GW, Kimmey MB, Madanick RD, Chak A, Lightdale CJ. Radiofrequency ablation in Barrett's esophagus with dysplasia. N Engl J Med. 2009;360(22):2277-2288.

2008

  • Yen EF, Ladabaum U, Muthusamy VR, Cello JP, McQuaid KR, Shah JN. Colonoscopic treatment of acute diverticular hemorrhage using endoclips. Dig Dis Sci. 2008;53(9):2480-2485.
  • Visser BC, Muthusamy VR, Yeh BM, Coakley FV, Way LW. Diagnostic evaluation of cystic pancreatic lesions. HPB (Oxford). 2008;10(1):63-69.
  • Ganz RA, Overholt BF, Sharma VK, Fleischer DE, Shaheen NJ, Lightdale CJ, Freeman SR, Pruitt RE, Urayama SM, Gress F, Pavey DA, Branch MS, Savides TJ, Chang KJ, Muthusamy VR, Bohorfoush AG, Pace SC, DeMeester SR, Eysselein VE, Panjehpour M, Triadafilopoulos G, Registry USM. Circumferential ablation of Barrett's esophagus that contains high-grade dysplasia: a U.S. Multicenter Registry. Gastrointest Endosc. 2008;68(1):35-40.

2007

  • Shah JN, Muthusamy VR. Minimizing complications of endoscopic ultrasound and EUS-guided fine needle aspiration. Gastrointest Endosc Clin N Am. 2007;17(1):129-143, vii-viii.
  • Muthusamy VR, Chang KJ. Optimal methods for staging rectal cancer. Clin Cancer Res. 2007;13(22 Pt 2):6877s-6884s.
  • Ghassemi KF, Wang RT, Muthusamy VR, Shah JN. Colonic histoplasmosis. Gastroenterol Hepatol (N Y). 2007;3(6):459-460.

2006

  • Wolfsen H, Canto M, Etemad B, Greenwald B, Gress F, Schembre D, Muthusamy VR, Ribeiro A, Sharma V, Ginsberg G. Bare fiber photodynamic therapy using porfimer sodium for esophageal disease. Photodiagnosis Photodyn Ther. 2006;3(2):87-92.

2005

  • Shah JN, Muthusamy VR. Endoscopic palliation of pancreaticobiliary malignancies. Gastrointest Endosc Clin N Am. 2005;15(3):513-531, ix. 

Abstracts

2013

  • Predictors of recurrent Barrett's esophagus after successful radiofrequency ablation in a nationwide, multicenter cohort: Results from the U.S. RFA Registry.  Bulsiewicz WJ, Dellon ES, Lyday WD, Ertan A, Camara DS, Komanduri S, Chmielewski GW, Muthusamy VR, Shaheen NJ. Oral Presentation, AGA/ASGE Presidential Plenary Session, Digestive Disease Week 2013.
  • Durability of reversion to squamous mucosa after successful eradication of Barrett's esophagus (BE) with radiofrequency ablation (RFA): Results from the U.S. RFA Registry. Bulsiewicz WJ, Pasricha S, Komanduri S, Muthusamy VR, Rothstein RI, Wolfsen HC, Lightdale CJ, Overholt BF, Camara DS, Shaheen NJ.  Oral Presentation, Topic Forum, Digestive Disease Week 2013.
  • The efficacy and safety of radiofrequency ablation (RFA) for treatment of Barrett's esophagus containing intramucosal carcinoma (IMC): Results from the U.S. RFA Registry.  Hathorn KE, Bulsiewicz WJ, Dellon ES, Rothstein RI, Corbett FS, Muthusamy VR, Overholt BF, Komanduri S, Shaheen NJ.  Oral Presentation, Topic Forum, Digestive Disease Week 2013.
  • Identifying the Ideal Strategy for the Management of Refractory Benign Esophageal Strictures: A Cost-Minimization Analysis. Kim S, van Oijen MG, Watson RR, Hamerski CM, Siersema PD, Muthusamy VR.  Poster Presentation, Digestive Disease Week 2013.
  • Biodegradable Stents are Superior to Fully Covered Metal Stents in the Endoscopic Management of Refractory Benign Esophageal Strictures: a Meta-analysis. Kim S, van Oijen MG, Agarwal N, Hamerski CM, Watson RR, Muthusamy VR.  Poster Presentation, Digestive Disease Week 2013.

2012

  • Low Volume Pancreatic Cyst Fluid Acquired by Endoscopic Ultrasound (EUS) Guided FNA: Is It Okay to Dilute It for CEA Measurement?  Hamerski CM, Samarasena JB, Iwashita T, Nakai Y, Muthusamy VR, Lee JG, Chang KJ.  Gastrointestinal Endoscopy Vol. 75, Issue 4, Supplement, April 2012, Page AB198.  Poster Presentation, Digestive Disease Week 2012.
  • Eradication Rates of Barrett's Esophagus Using Radiofrequency Ablation (RFA): Results from the U.S. RFA Registry.  Shaheen NJ, Bulsiewicz WJ, Rothstein RI, Komanduri S, Wolfsen HC, Muthusamy VR, Triadafilopoulos G, Lyday WD, Ertan A, Pruitt RE, Infantolino A, Chmielewski, GW, Corbett FC, Camara DS, Lightdale CJ, Overholt BF.  Gastrointestinal Endoscopy Vol. 75, Issue 4, Supplement, April 2012, Page AB460.  Poster Presentation, Digestive Disease Week 2012.
  • The Safety and Efficacy of Endoscopic Mucosal Resection Prior to Radiofrequency Ablation for Dysplastic Barrett's Esophagus: Results from the U.S. RFA Registry Bulsiewicz WJ, Infantolino A, Lightdale CJ, Ertan A, Pruitt RE, Muthusamy VR, Overholt BF, Shaheen NJ. Gastroenterology Vol. 142, Issue 5, Supplement 1, May 2012, Page S-427.  Poster Presentation, Digestive Disease Week 2012.
  • Radiofrequency Ablation (RFA) Safely Treats Barrett's Esophagus in a Nationwide, Multicenter Cohort: Results from the U.S. RFA Registry. Shaheen NJ, Bulsiewicz, WJ, Rothstein RI, Komanduri S, Wolfsen HC, Triadafilopoulos G, Lyday WD, Ertan A, Pruitt RE,  Infantolino A, Chmielewski GW, Muthusamy VR, Camara DS, Lightdale CJ, Overholt BF.  Gastroenterology Vol. 142, Issue 5, Supplement 1, May 2012, Page S-752.
  • Gallbladder Varices: An Unusual Manifestation of Portal Hypertension.  Kim S, Muthusamy VR. The American Journal of Gastroenterology, Vol. 107, Supplement 1, October 2012, Abstract #736, pp. S304-305.  Poster Presentation, American College of Gastroenterology Annual Meeting 2012.

2011

  • Split-Dosed MiraLax® and Gatorade® is an Effective, Safe, and Tolerable Option for Bowel Preparation in Low Risk Patients: Results of a Randomized Controlled Trial. Samarasena JB, Farukhi, MU, Muthusamy VR, and Jamal MM. Gastrointestinal Endoscopy, 73 (4) Supplement: AB 125.  Oral Presentation, Digestive Disease Week 2011.
  • EUS Guided Rendezvous Technique for Biliary Access After Failed Cannulation. Iwashita T, Lee JG, Shinoura S, Muthusamy VR, and Chang KJ. Gastrointestinal Endoscopy, 73 (4) Supplement: AB 182. Poster Presentation, Digestive Disease Week 2011.
  • The New Forward Viewing Curvilinear Array Echoendoscope (FVES): Are There Any Disadvantages? A Prospective Comparison Study.  Iwashita T, Nakai Y, Lee JG, Park DH, Muthusamy VR, and Chang KJ. Gastrointestinal Endoscopy, 73 (4) Supplement: AB 339-340. Poster Presentation, Digestive Disease Week 2011. 
  • Using Efficiency Analysis and Targeted Interventions to Improve Operational Performance and Achieve Cost Savings in an Endoscopy Unit. Kaushal N, Lee JG, Chang KJ, Muthusamy V.  The American Journal of Gastroenterology, Vol. 106, Supplement 2, October 2011, Abstract #1383, p. S530.  Poster Presentation, American College of Gastroenterology Annual Meeting 2011.
  • Factors on Gross Specimen Evaluation Thay May Predict Specimen Adequacy During Endoscopic Ultrasound Guided Fine Needle Aspiration (EUS-FNA) of Solid Lesions.  Wong P, Lee JG, Iwashita T, Nakai Y, Park DH, Liu R, Kim C, Muthusamy V.  The American Journal of Gastroenterology, Vol. 106, Supplement 2, October 2011, Abstract #1386, p. S531.  Poster Presentation, American College of Gastroenterology Annual Meeting 2011.

2010

  • Durability of Epithelial Reversion after Radiofrequency Ablation: Follow-up of the AIM Dysplasia Trial. Shaheen NJ, Fleischer DE, Eisen GM, Wang KK, Peery AF, Infantolino A, Chak A, Wolfsen HC, Falk GW, Muthusamy VR, Lightdale CJ. Gastroenterology 2010;138:S-16-S-17. AGA Oral Presentation, Digestive Disease Week 2010.
  • Quality of Colonoscopy Withdrawal Technique and Variability in Adenoma Detection Rates: Is Technique More Important Than Time? Tang TS, Savides TJ, Muthusamy VR, Crissien AM, Ho SB, Shah NK, Bain AJ, Mackintosh EE, Saraf LJ, Kalmaz, D, Lee RH.  Gastrointestinal Endoscopy, 71 (5): AB116.  ASGE Plenary Oral Presentation, Digestive Disease Week 2010.
  • Endoscopic Radiofrequency Ablation for Barrett's Esophagus: Five-Year Durability Outcomes from a Prospective Multi-Center Trial.  Fleischer DE, Overholt BF, Sharma VK, Reymunde A, Kimmey MB, Chuttani R, Chang KJ, Muthusamy VR, Lightdale CJ, Santago N, Pleskow DK, Dean PJ, and Wang KK. Gastrointestinal Endoscopy, 71 (5): AB117.  ASGE Plenary Oral Presentation, Digestive Disease Week 2010.
  • Are There Factors That Predict Which Patients Undergoing Radiofrequency Ablation of Barrett's Esophagus Will Require Prolonged Ablation Therapy?  Shinoura S, Chang KJ, Iwashita T, Lee JG, and Muthusamy VR. Gastrointestinal Endoscopy, 71 (5): AB172.  Poster Presentation, Digestive Disease Week 2010.

2009

  • Overall Survival in Locally Advanced Pancreatic Cancer Patients Treated with a Biologic Using Endoscopic Ultrasound (EUS) FNI or CT-Guided Injection: A Single Institution Experience.  Chang, KJ, Ashida R, Muthusamy VR, Imagawa DK, Holcombe R, Sanati H, Zell JA, Kuo JV, Blatner GL, Eubanks S, Lee JG. Gastrointestinal Endoscopy, 69(5): AB132-AB133.  Oral Presentation, Plenary Session, by KJ Chang, Digestive Disease Week 2009.
  • The Utility of Endoscopic Ultrasound (EUS) in the Evaluation of Patients with Bile Duct Dilation (BDD) of Unclear Etiology.  Steichen JC, Lee JG, Chang KJ, Nishimura M, Ashida R, Shinoura S, Nguyen TT, Whang C, Lee CE, Muthusamy VR. Gastrointestinal Endoscopy, 69(5): AB244.  Poster Presentation, Digestive Disease Week 2009.
  • The Feasibility and Effectiveness of Removable Esophageal Stents for the Treatment of Benign Esophageal Strictures (BES): A Single Center Experience.  Dan DT, Gannavarapu B, Lee JG, Chang KJ, Nishimura M, Ashida R, Shinoura S, Lee CE, Nguyen TT, Whang C, Muthusamy VR.  Gastrointestinal Endoscopy, 69(5): AB344-AB345.  Poster Presentation, Digestive Disease Week 2009.
  • A Randomized, Double-Blinded, Placebo-Controlled Trial of Promethazine and Diphenhydramine as Adjunct Sedatives for Endoscopic Ultrasound (EUS) and Endoscopic Retrograde Cholangiopancreatography (ERCP): Interim Analysis Results. Reddy SB, Chang KJ, Lee JG, Nguyen TT, Lee CE, Whang C, Nishimura M, Shinoura S, Ashida R, Muthusamy VR.  Gastrointestinal Endoscopy, 69(5): AB104.  Oral Presentation by SB Reddy, Digestive Disease Week 2009.
  • Successful Radiofrequency Ablation (RFA) of Early Esophageal Adenocarcinoma: A Case Report.  Muthusamy VR, Yamini D, Lee J, Chang K.  American Journal of Gastroenterology 104 (3): S196. Poster Presentation, American College of Gastroenterology Annual Meeting 2009.

2008

  • The Utility of Endoscopic Ultrasound (EUS) In Patients with Barrett's Esophagus (BE) and High Grade Dysplasia (HGD): Analysis of the AIM Dysplasia Trial Experience.  Muthusamy VR, Rastogi A, Edmundowics SA, Shaheen NJ, Sharma P, Chang KJ.  Gastrointestinal Endoscopy, Volume 67(5): AB99.  Oral Presentation, Topic Forum, Digestive Disease Week 2008.
  • The Safety and Feasibility of Endoscopic Ultrasound Guided Fine Needle Injection (EUS-FNI) of Local Biologic Anti-tumor Agents (BAA) In Patients with Advanced Pancreatic Carcinoma (APC). Muthusamy VR, Ashida R, Lee JG, Chang KJ. Gastrointestinal Endoscopy, Volume 67(5): AB109-110.  Oral Presentation, Topic Forum, Digestive Disease Week 2008.
  • A Comparison of the Diagnostic Yield and Specimen Adequacy between 22 and 25 Gauge Needles for Endoscopic Ultrasound Guided Fine-Needle Aspiration (EUS-FNA) of Solid Pancreatic Lesions (SPL): Is Bigger Better? Nguyen TT, Lee CE, Whang CS, Ashida R, Lee, JG, Chang KJ, Muthusamy VR. Gastrointestinal Endoscopy, Volume 67(5): AB100.  Oral Presentation by TH Nguyen, Topic Forum, Digestive Disease Week 2008.
  • In Patients with Barrett's Esophagus (BE) and High Grade Dysplasia (HGD), Does Endoscopic Ultrasound (EUS) Provide Additional Information Beyond Esophagogastroduodenoscopy (EGD) Alone? Whang CS, Lee CE, Nguyen TT, Lee JG, Chang KJ, Muthusamy VR. Gastrointestinal Endoscopy, Volume 67(5): AB199.  Poster Presentation, Digestive Disease Week 2008.
  • The Diagnosis of Acinar Cell Carcinoma (ACC) of the Pancreas via Endoscopic Ultrasound Guided Fine Needle Aspiration (EUS-FNA): a New Approach. Yamini D, Tongson-Ignacio J, Chang KJ, Lee JG, and Muthusamy R.  American Journal of Gastroenterology, Vol. 103: Supplement 1s, September 2008, pp. S83-S84.  Poster presentation, American College of Gastroenterology, 2008.

2007

  • Halo360 Circumferential Ablation is Safe and Effective for the Treatment of Barrett's Esophagus with High-Grade Dysplasia:  A U.S.  Multi-Center Registry.  Ganz RA, Overholt BF, Sharma VK, Fleischer DE, Shaheen NJ, Lightdale CJ, Freeman SR, Pruitt RE, Urayama SM, Gress F, Pavey DA, Branch MS, Savides TJ, Chang KJ, Muthusamy VR, Bohorfoush AG, Pace SC, DeMeester SR, Eysselein VE, Panjehpour M, Triadafilopoulos G. Gastrointestinal Endoscopy.  2007 65(5): AB147.  Digestive Disease Week 2007.

2006

  • Endoscopic Ablation of Intestinal Metaplasia with High Grade Dysplasia (IM-HGD) in Esophagectomy Patients Using a Balloon Based Ablation System. C. Daniel Smith, Pablo Bejarano, Muthusamy R, Marco Patti, W. Scott Melvin, Brian J Dunkin.  SAGES April 2006, Abstract S051.
  • Predictive Value of Pancreatic Ductal Dilation on Endoscopic Ultrasound Diagnosis of Pancreatic Cancer.  Nguyen W, Chen A, Chen W, Lee JG,   Muthusamy V,  Mclaren C, Chang K. Gastrointestinal Endoscopy, Volume 65, Issue 5, Pages AB298-AB298.  Poster Presentation, Digestive Disease Week 2006.

2005

  • Endoscopic Ultrasonography versus Multidetector CT for the Evaluation of Pancreatic Adenocarcinoma.  Rodriguez H, Muthusamy VR, Shah J.  Gastroenterology, Vol. 128:4 suppl 2, April 2005. Abstract M1854.Poster Presentation, Digestive Disease Week for May 2005.
  • Thin-Layer Ablation of Intestinal Metaplasia with High-grade Dysplasia in Esophagectomy Patients Using a Bipolar Radiofrequency Balloon Device (BARRx System)  Dunkin BJ, Smith CD, Bejarano PA, Martinez J, Muthusamy VR, Patti M, and Melvin WS.  Gastroenterology, Vol. 128:4 suppl 2, April 2005. Abstract M2033. Poster Presentation, Digestive Diseases Week, May 2005.

2003

  • A Multicenter Survey of the Availability of Endoscopic Ultrasound (EUS) and Physician Attitudes Regarding the Utility of EUS in the Staging of Gastrointestinal Malignancies. Muthusamy R, S.F. Rai J, Rao I et al., Gastrointestinal Endoscopy, Vol. 57:5, April 2003. Abstract W1246.  Poster Presentation, Digestive Diseases Week, May 2003.

2001

  • Techniques for Optimal Cytologic Yield Using The Olympus KB-22 "Shotgun" Needle in Endoscopic Ultrasound (EUS) Guided Fine Needle Aspiration (FNA): An Ex-Vivo Model. Muthusamy R, S. F. Jafri, et al. Gastrointestinal Endoscopy, Vol. 53:5, April 2001. Page AB120. Poster Presentation, Digestive Diseases Week, May 2001
  • A New Device Utilizing Optical Birefringence for the Immediate Detection of Biliary Microlithiasis (BM) During ERCP. Muthusamy R, Karen Lauer et al., Gastrointestinal Endoscopy, Vol. 53:5, April 2001. Page AB127. Poster Presentation, Digestive Diseases Week, May 2001
  • Utilization of Color Flow (CF) and Doppler Ultrasound (DUS) During Endoscopic Ultrasound (EUS). S.F. Jafri, Muthusamy R, et al., Gastrointestinal Endoscopy,Vol. 53:5, April 2001. Page AB130. Poster Presentation, Digestive Diseases Week, May 2001.
  • The Role of Endoscopic Ultrasound (EUS) in the Evaluation of Fecal Incontinence. Muthusamy R, Cristian N. Jivcu, et al., Gastrointestinal Endoscopy, Vol. 53:5, April 2001. Page AB166. Poster Presentation, Digestive Diseases Week, May 2001
  • Endoscopic Ultrasound (EUS) Guided Fine Needle Aspiration (FNA) in the Diagnosis and Staging of Ampullary Neoplasms. Muthusamy R, S.F. Jafri, et al., Gastrointestinal Endoscopy, Vol. 53:5, April 2001. Page AB176. Poster Presentation, Digestive Diseases Week, May 2001