WalterAKoltunMDFACS, FASCRS

PubMed

• 45 citations
  Identification of Disease-Associated DNA Methylation in B Cells from Crohn’s Disease and Ulcerative Colitis Patients
  Zhenwu Lin, John P. Hegarty, Wei Yu, Jon A. Cappel, Xi Chen
  Digestive Diseases and Sciences. 2012-07-21
• 3 citations
  TCF7L1 RegulatesExpression in Colorectal Cancer Cells.
  Carli M King, Olivia M Marx, Wei Ding, Walter A Koltun, Gregory S Yochum
  Genes. 2023-02-14
• 207 citations
  Dehydration Is the Most Common Indication for Readmission After Diverting Ileostomy Creation
  Evangelos Messaris, Rishabh Sehgal, Susan Deiling, Walter A. Koltun, David B. Stewart
  Diseases of the Colon and Rectum. 2012-02-01

Journal Articles

• Response to the Letter to the Editor from Dai Et Al, Regarding “Smoking and the Risk of Pouchitis in Ulcerative Colitis Patients with Ileal Pouch Anal Anastomosis”  
  Walter Koltun, Emmanuelle D Williams, Inflammatory Bowel Diseases
• Smoking and the Risk of Pouchitis in Ulcerative Colitis Patients with Ileal Pouch-Anal Anastomosis  
  Walter Koltun, Emmanuelle D Williams, Inflammatory Bowel Diseases
• IBD LIVE Case Series: Case 9: Do Race and Extraintestinal Manifestations Affect Treatment of Severe Crohn’s Colitis?  
  David J Keljo, Joel R Rosh, Samir A Shah, Myron H Brand, Alka Goyal, Brian K Theisen, Hans H Herfarth, Walter A Koltun, Kim L Isaacs, Julia B Greer, Corey A Siegel, Ra..., Inflammatory Bowel Diseases
• Genetic Determinants Associated with Early Age of Diagnosis of IBD  
  Connelly TM, Berg AS, Harris L, Brinton D, Deiling S, and Koltun WA, Diseases of the Colon and Rectum, 1/1/2015
• The Cancer "Fear" in IBD Patients: Is It Still Real?  
  Connelly TM and Koltun WA, J Gastrointest Surg, 1/1/2014
• The TNFSF15 Gene Single Nucleotide Polymorphism rs7848647 is Associated with Surgical Diverticulitis  
  Connelly TM, Berg A, Hegarty JP, Harris L, Brinton D, Deiling S, Poritz LS, and Koltun WA, Ann Surg, 1/1/2014
• Colonic TAGAP Expression Varies with Location and Severity of Inflammation in Crohn's Disease  
  Connelly TM, Berg AS, Harris L, Ruggiero F, Deiling S, Brinton D, and Koltun WA, J Surg Research, 1/1/2014
• Increased Risk of Incisional Hernia After Sigmoid Colectomy for Diverticulitis Compared to Colon Cancer  
  Salgado J, Messaris E, Deiling S, Connelly TM, Berg AS, Stewart DB, McKenna K, Poritz LS, and Koltun WA, J Am College Surg, 1/1/2014
• Ulcerative Colitis Neoplasia is Not Associated with Common IBD SNPs  
  Connelly TM, Berg A, Harris L, Brinton D, Hegarty JP, Deiling S, Stewart DB, and Koltun WA, Surgery, 1/1/2014
• Building an Academic Colorectal Division  
  Koltun WA, Clinics of Colon and Rectal Surgery, 1/1/2014
• T-Cell Activation Rho GTPase-Activating Protein Expression Varies with Inflammation Location and Severity in Crohn's Disease  
  Connelly, TM, Berg, AS, Harris, LR, Hegarty, JP, Ruggiero, FM, Deiling, SM, Brinton, DL and Koltun, WA, Journal Surgical Research, 1/1/2014
• Ulcerative Colitis is Associated with an Increased Risk of Venous Thromboembolism in the Postoperative Period  
  Wilson MZ, Connelly TM, Tinsley A, Hollenbeak CS, Koltun WA, and Messaris E, Annals of Surgery, 1/1/2014
• Hernia Incidence Following Single-Site Versus Standard Laparoscopic Colorectal Surgery  
  Sangster W, Kulaylat AN, Stewart DB, Schubart JR, Koltun WA, and Messaris E, Colorectal Disease, 1/1/2014
• The NOD2insC Risk Allele is Associated with Poor Pouch Outcome Following IPAA in Patients with Ulcerative Colitis  
  Tyler AD, Milgrom R, Stempak JM, Xu W, Brumell J, Muise AM, Sehgal R, Koltun WA, Shen B, and Silverberg MS, Gut, 1/1/2013
• Surgical Treatment of IBD Associated Dysplasia  
  Connelly TM, Koltun WA, Expert Rev Gastroenterol Hepatol, 1/1/2013
• Single Nucleotide Polymorphism in the STAT5 Gene Favors Colonic as Opposed to Small Bowel Inflammation in Crohn's Disease  
  Connelly TM, Berg AS, Hegarty JP, Brinton D, Deiling S, Poritz LS, Koltun WA, Stewart DB, Dis Col Rectum, 1/1/2013
• NOD2Mutations Affect Muramyl Dipeptide Stimulation of Human B Lymphocytes and Interact with Other IBD-Associated Genes  
  Lin, Z., Hegarty, JP, John, G., Berg, A., Wang, Z., Sehgal, R., Pastor, DM, Wang, Y., Harris, LR 3rd, Poritz, LS, Schreiber, S. and Koltun WA, Digestive Disease Sciences, 1/1/2013
• A Model for Family-Based Case-Control Studies of Genetic Imprinting and Epistasis  
  Li, X., Sui, Y., Liu, T., Wang, J., Li, Y., Lin, Z., Hegarty, J., Koltun, WA, Wang, Z. and Wu, R, Brief Bioinformation, 1/1/2013
• The NOD2insC Polymorphism is Associated with Worse Outcome Following Ileal Pouch-Anal Anastomosis for Ulcerative Colitis  
  Tyler AD, Milgrom R, Stempak JM, Xu W, Brumell JH, Muise AM, Sehgal R, Cohen Z, Koltun WA, Shen B, and Silverberg MS, Gut, 1/1/2013
• Inflammatory Bowel Disease: Diagnosis and Therapeutics  
  Koltun WA, Diseases of the Colon and Rectum, 1/1/2012
• PTPN2 is Associated with Crohn’s Disease and It’s Expression is Regulated by NKX2-3  
  Yu W, Hegarty JP, Berg A, Kelly AA, Wang Y, Poritz LS, Franke A, Schreiber S, Koltun WA, and Lin Z, Disease Markers, 1/1/2012
• The Role of Genetics in the Surgical Management of IBD  
  Connelly TM and Koltun WA, Seminars in Colon and Rectal Surgery, 1/1/2012
• Less Than Total Proctocolectomy in Crohn's Disease Patients With Dysplasia?  
  Connelly TM and Koltun WA, Ann Surg, 1/1/2012
• Mutation in TAGAP is Protective of Anal Sepsis in Ileocolic Crohn's Disease  
  Connelly TM, Sehgal R, Berg AS, Hegarty JP, Deiling S, Stewart DB, Poritz LS, Koltun WA, Dis Colon Rectum, 1/1/2012
• Proton Pump Inhibitor Therapy and Malnourishment are Better Predictors of Recurrent C Difficile Colitis than Choice of Antibiotics  
  Rotramel A, Deiling S, Berg A, Poritz LS, McKenna KJ, Messaris E, Koltun W, and Stewart D, Journal of Gastrointestinal Surgery, 1/1/2012
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Books/Book Chapters

• Current Therapy of Colon and Rectal Surgery 
  Chapter: Colorectal Surgery in the High Risk Patient 
  Koltun WA and Connelly TM2014
• Advanced Therapy in IBD: Volume 1: IBD and Ulcerative Colitis 
  Chapter: Brooke's Ileostomy 
  Page 429 - 432Sehgal R and Koltun WAEditors: Bayless/Hanauer.Edition 3rd,2011
• ASCRS Textbook of Colon and Rectal Surgery 
  Chapter: Diagnosis and Evaluation 
  Koltun WASpringer Verlag2004
• Advanced Therapy in Inflammatory Bowel Disease 
  Chapter: Management of Post-Operative Fistulae 
  Page 491 - 493Koltun WAEditors: Bayless,Hanauer.Edition 2nd,2001
• In Pearls of Wisdom Board Review Text 
  Chapter: Appendicitis 
  Page 92 - 99Koltun WA, and Poritz LSMedical Publishing1999
• Current Therapy in Colon and Rectal Surgery 
  Chapter: Colorectal Surgery in the High Risk Patient 
  Koltun WAEditors: Church J, Fazio V.Edition 2nd,1997
• Surgery: Scientific Principles and Practice 
  Chapter: Anatomy and Physiology of the Small Intestine 
  Page 719 - 731Koltun WA, and Pappas TNEditors: Greenfield, L.J., Mulholland, M.W., Oldham, K.T., and Zelenoch, G.B..J.B. Lippincott1993
• Emergency Medicine 
  Chapter: Venous Access 
  Page 2096 - 2116Koltun WA, Brooks DC, and Simpson GLEditors: May, H.L.Little, Brown and Company1992
• Emergency Medicine 
  Chapter: Pulmonary Artery Catheterization 
  Page 2137 - 2141Koltun WAEditors: May, H.L.Little, Brown and Company1992
• Swine in Biomedical Research 
  Chapter: Technical Aspects of Small Intestinal Transplantation in Young Pigs 
  Page 391 - 398Pritchard TJ, Koltun WA, and Kirkman RLEditors: Tumbleson, M.E.Plenum Publishers1986
• Small Bowel Transplantation 
  Chapter: Small Bowel Transplantation in the Pig 
  Pritchard TJ, Koltun WA, Madara JL, and Kirkman RLEditors: Deltz, E.Springer-Verlag, New York, NY1986
• Small Bowel Transplantation 
  Chapter: Recent Results of Small Bowel Transplantation in the Rat Model 
  Koltun WA, and Kirkman RLEditors: Deltz, E.Springer-Verlag, New York, NY1986
• The Clinicians Guide to Inflammatory Bowel Disease 
  Chapter: Surgical Therapy for Inflammatory Bowel Disease 
  Page 199 - 219Koltun WA and Poritz LS
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Abstracts/Posters

• Is There An Asian Ethnic Disparity in Outcomes Following Colectomy for Diverticulitis?
  Choi CS, Koltun WA, Hollenbeak CS, Pennsylvania Society of Colon and Rectal Surgeons, Philadelphia, PA, 1/13/2015
• Surgical Diverticulitis is Not Associated with Defects in Expression of Wound Healing Genes
  Connelly TM, Berg AS, Harris L, Brinton D, Deiling S, Koltun WA, American Society of Colon and Rectal Surgeons, Hollywood, FL, 1/17/2014
• A Single Nucleotide Polymorphism in the I14 Gene is Strongly Associated with Susceptibility to Clostridium Difficile Infection in Inflammatory Bowel Disease Patient
  Connelly TM, Koltun WA, Berg AS, Hegarty JP, Harris L, Deiling S, and Stewart DB, Central Surgical Association, Indianapolis, IN, 1/7/2014
• The Expression of Colonic TAGAP is Affected by Severity of Crohn's Disease Inflammation and the Rs212388 Allele
  Connelly TM, Berg AS, Harris L, Hegarty JP, Deiling S, Stewart DB, and Koltun WA, Academic Surgical Congress, San Diego, CA, 1/4/2014
• Neoplasia in Ulcerative Colitis Patients is not Associated with Previously Identified Inflammatory Bowel Disease Single Nucleotide Polymorphisms
  Connelly TM, Berg AS, Hegarty JP, Deiling S, Stewart DB, and Koltun WA, Academic Surgical Congress, San Diego, CA, 1/4/2014
• A Single Nucleotide Polymorphism in the Stat5 Gene Favors Colonic as Opposed to Small Bowel Inflammation in Crohn's Disease
  Connelly TM, Koltun WA, Berg AS, Hegarty JP, Brinton D, Deiling S, Poritz LS, Stewart DB, American Society of Colon and Rectal Surgeons, Phoenix, AZ, 1/29/2013
• Polymorphism within the TNFSF15 Gene is Associated with Diverticulitis Requiring Surgical Intervention: A Confirmatory Study
  Connelly T., Berg A., Hegarty J., Deiling S., Harris L., Brinton D., Poritz L. and Koltun W., American Society of Colon and Rectal Surgeons, Phoenix, AZ, 1/29/2013
• Urgent Total Abdominal Colectomy Achieves Morbidity and Mortality Comparable to Elective Colectomy and IPAA in Ulcerative Colitis Patients
  Sanders B, Connelly TM, Berg AS, Deiling S, Brinton D, Koltun WA, American College of Surgeons, Washington, DC, 1/6/2013
• Limiting Factors for Ileostomy Closure Following Total Abdominal Colectomy
  Kim B, Stewart D, Poritz L, Deiling S, Koltun K, and Messaris E, Digestive Disease Week, San Diego, CA, 1/19/2012
• Outcomes of Percutaneous Drainage and Delayed Ileocolectomy in Crohn's Disease Patients with Intra-Abdominal Abscesses
  Chestnut C, Poritz L, Stewart D, McKenna K, Koltun W, and Messaris E, Digestive Disease Week, San Diego, CA, 1/19/2012
• Personalized Medicine: Using Genetics in the Surgical Treatment of IBD
  Connelly TM, Sehgal R, and Koltun WA, Penn State Hershey Symposium on Personalized Medicine, Hershey, PA, 1/8/2012
• Proton Pump Inhibitor Therapy and Malnourishment are Better Predictors of Recurrent C. Difficile Colitis than Choice of Antibiotics
  Rotramel A, Deiling S, Berg A, Poritz LS, McKenna K, Messaris E, Koltun WA, and Stewart DB, American Society of Colon and Rectal Surgeons, San Antonio, TX, 1/6/2012
• Mutations in TAGAP are Protective of Anal Sepsis in Ileocolonic Crohn's Disease
  Connelly TM, Sehgal R, Berg A, Hegarty JP, Deiling S, Poritz LS, and Koltun WA, American Society of Colon and Rectal Surgeons, San Antonio, TX, 1/4/2012
• Outcomes of Percutaneous Drainage and Delayed Ileocolectomy in Crohn's Disease Patients with Intra-Abdominal Abscesses
  Chestnut C, Poritz LS, Stewart DB, McKenna KJ, Koltun WA, and Messaris E, American Society of Colon and Rectal Surgeons, San Antonio, TX, 1/2/2012
• Limiting Factors for Ileostomy Closure Following Total Abdominal Colectomy
  Kim B, Stewart B, Poritz L, Deiling S, Koltun W, and Messaris E, American Society of Colon and Rectal Surgeons, San Antonio, TX, 1/2/2012
• Genes and Postoperative Phenotype: Using Genetics to Guide Surgical Decision Making in IBD: A Review of Recent Studies and Advances
  Connelly TM, Sehgal R, and Koltun WA, Sylvester O'Halloran Meeting, University of Limerick, Ireland, 1/1/2012
• ATG16L1 Polymorphism is Associated with Increased Risk of Emergency Colectomy in Ulcerative Colitis
  Connelly TM, Sehgal R, Choi C, Brinton D, Berg A, Deiling S, Poritz LS, Koltun WA, Sir Peter Freyer Meeting, Galway, Ireland, 1/1/2012
• Single Nucleotide Polymorphisms (SNPs) of TNFSF15 are Associated with Surgical Diverticulitis
  Connelly TM, Hegarty JP, Berg A, Lin Z, Wang Y, Deiling S, and Koltun WA, American College of Surgeons, Chicago, IL, 1/1/2012
• Intraoperative Fluid Administration Contributes to Post-Operative Ileus
  Messaris E, Sehgal R, Deiling S, Koltun W, Stewart D, McKenna K, and Poritz L, Pennsylvania Society of Colon and Rectal Surgeons, Philadelphia, PA, 1/29/2011
• Changes in Serum Protein Levels in Ulcerative Colitis Patients Following Proctocolectomy
  Sehgal R, Hegarty JP, Kelly AA, Pastor DM, Poritz LS, Lin Z, Vrana K, and Koltun WA, Central Surgical Association, Detroit, MI, 1/19/2011
• Tumor Volume and Percent Positive Lymph Nodes as a Predictor of 5 Year Survival in Colorectal Cancer
  Poritz LS, Sehgal R, Hartnett K, Berg A, and Koltun WA, Central Surgical Association, Detroit, MI, 1/17/2011
• Mutations in IRGM are Associated with More Frequent Need for Surgery in Ileocolonic Crohn's Disease (CD) Patients
  Sehgal R, Berg A, Polinski JI, Hegarty JP, Lin Z, Poritz LS, and Koltun WA, American Society of Colon and Rectal Surgeons, Vancouver, Canada, 1/16/2011
• Gene Signature Modeling to Predict Risk of Crohn's Disease-Like Complications or Severe Pouchitis After Ileal Pouch Anal Anastomosis
  Sehgal R, Berg A, Polinski JI, Hegarty JP, Lin Z, Stewart DB, Poritz LS, and Koltun WA, American Society of Colon and Rectal Surgeons, Vancouver, Canada, 1/16/2011
• Infliximab (IFX) Does Not Alter Ileocolectomy for Crohn's Disease (CD)
  Messaris E, Sehgal R, Koltun WA, Stewart DB, McKenna KJ, and Poritz LS, American Society of Colon and Rectal Surgeons, Vancouver, Canada, 1/14/2011
• Dehydration Leads to Frequent Readmission after Ileocolectomy Creation
  Messaris E, Sehgal R, Deiling S, Koltun WA, Stewart DB, McKenna KJ and Poritz LS, American Society of Colon and Rectal Surgeons, Vancouver, Canada, 1/14/2011
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Lectures

• The Evolving Role of Genetics in the Surgical Management of IBD 
  Carlisle Regional Medical Center, Carlisle, PA - 1/21/2014
• Surgery Still Better Than Remicade for IBD 
  Cleveland Clinic Florida, Weston, FL - 1/10/2014
• Is Diverticulitis a Genetic Disease? 
  Barcelona, Spain - 1/25/2014
• The Evolving Role of Genetics in the Management of IBD 
  Cleveland Clinic Florida, Weston, FL - 1/10/2014
• Is Diverticulitis a Genetic Disease 
  Cleveland Clinic Florida, Weston, FL - 1/10/2014
• Why is Surgery Still Better than Tumor Necrosis Factor Antagonists of IBD 
  Rhode Island Hospital & the Alpert Medical School of Brown University, Providence, RI - 1/2/2014
• Management of Perianal Crohn’s Disease in the Era of TNF Antagonists 
  Cleveland Clinic, Fort Lauderdale, FL - 1/16/2013
• Role of Genetics in the Surgical Management of IBD 
  Cleveland Clinic, Fort Lauderdale, FL - 1/15/2013
• Genetics in the Surgical Management of IBD 
  Robert Wood Johnson Medical School, New Brunswick, NJ - 1/10/2013
• Treating the IBD Patient: Surgery is Better than Anti-TNF 
  Washington University School of Medicine, St. Louis, MO - 1/24/2012
• Ostomy Complications: How to Avoid Them and How to Fix Them 
  Hollywood, FL - 1/14/2012
• Outpatient Management of Common Problems in the IBD Patient 
  Hershey, PA - 1/6/2012
• Inpatient Management of IBD: Case Presentations 
  Hershey, PA - 1/6/2012
• Surgery for IBD: Crohn's Disease, Ulcerative Colitis, Perineal Crohn's Disease 
  Hershey, PA - 1/5/2012
• Using Genetics to Alter Surgical Management of IBD: Are We There Yet? 
  Chicago, IL - 1/3/2012
• Management of Inflammatory Bowel Disease 
  Vancouver, British Columbia, Canada - 1/18/2011
• Using Genetics for the Surgical Management of IBD 
  Washington Hospital Center, Washington, DC - 1/15/2011
• Dysplasia in Ulcerative Colitis 
  Washington Hospital Center, Washington, DC - 1/14/2011
• Management of Complex Perianal Crohn's Disease in the Anti-TNF Era 
  Rochester, MN - 1/11/2011
• Surgery for Inflammatory Bowel Disease 
  Lancaster, PA - 1/6/2011
• Etiology & Biology of Crohn's Disease 
  University of Minnesota, Minneapolis, MN - 1/20/2010
• The Etiology and Biology of Crohn's Disease 
  Penn State Hershey Medical Center, Hershey, PA - 1/2/2010
• Etiology and Biology of Crohn's Disease 
  Prague, Czech Republic - 1/24/2009
• Ulcerative Colitis 
  Prague, Czech Republic - 1/23/2009
• Pouch Surgery for IBD: Complications and Possible Use in Crohn's Disease 
  Mount Sinai Hospital, Toronto, Ontario, Canada - 1/6/2009
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