Ronald M. Katon, MD

Ronald M. Katon, MD
Professor of Medicine
Division of Gastroenterology, OHSU
OHSU/ VAMC

• Degrees:
  B.A. - University of Vermont,1962
  M.D. - Chicago Medical School, 1966
  
• Residency:
  Internal Medicine - Thomas Jefferson Medical School Hospital, 1966-1967
  Internal Medicine - Oregon Health & Science University, 1969-1971
  
• Fellowship:
  Gastroenterology - Oregon Health & Science University, 1971-1973
  
• Research/Clinical Interests:
  Research techniques in the treatment of biliary and pancreatic disease, variable stiffness colonoscopy, ultrathin endoscopy, changing patterns of ERCP (endoscopic retrograde cholangiopancreatography), idiopathic gastrointestinal bleeding.
  
• Representative Publications:
  • Katon RM , Smith FW. Panendoscopy in the Early Diagnosis of Acute Upper G.I. Bleeding. Gastroenterology 1973; 65: 728.
    
  • Bilbao MK, Dotter CT, Lee TG, Katon RM . Complications of Cholangiopancreatography – A 10,000 Case Study. Gastroenterology 1976; 70: 314-320.
    
  • Bohlman TW, Katon RM , Lipshutz G et al. Fiberoptic Pansigmoidoscopy: An Evaluation and Comparison with Rigid Sigmoidoscopy. Gastroenterology 1977; 72: 644
    
  • Lieberman DA, Wuerker CK, Katon RM . Cardiopulmonary Risk of Esophagogastroduodenoscopy. Gastroenterology 1985; 88: 468-472.
    
  • Caos A, Manier J, Benner K, Katon RM . “Golytely” Preparation for Colonoscopy in Acute Lower Gastrointestinal Hemorrhage. J. Clin Gastro 1986; 8: 46-49.
    
  • Huibregtse K, Katon RM et al. Endoscopic Palliative Treatment in Pancreatic Cancer. Gastrointestinal Endoscopy 1986; 32: 334-338.
    
  • Huibregtse K, Katon RM , Tytgat GNT. Endoscopic Treatment of Postoperative Biliary Strictures. Endoscopy 1986; 18: 133-137.
    
  • Huibregtse K, Katon RM , Tytgat GNT. Precut Papillotomy Via Fine Needle Knife Papillotome – A Safe and Effective Technique. Gastrointest. Endosc. 1986; 32: 403-405.
    
  • Binmoeller KF, Katon RM and Shneidman R. Endoscopic Management of Post-Operative Biliary Leaks. Amer J. Gastroent. 1991; 86: 232-234.
    
  • WU WC, Katon RM et al. Silicone-Covered Expanding Metallic Stents for the Palliation of Malignant Esophageal Obstruction and Esophagorespiratory Fistulae. Gastrointest Endosc. 1994; 40: 22-23.
    
  • Mcafee JH and Katon RM . Tiny Snares Prove Safe and Effective for Removal of Diminutive Polyps. Gastrointest Endosc. 1994; 40: 301-303.
    
  • Saxon R, Barton R, Katon RM et al. Treatment of Malignant Esophagorespiratory Fistulae with Silicone Coated Z Stents. JVIR. 1995; 6: 237-242.
    
  • Degregorio B, Kinsman K, Katon RM et al. Treatment of Esophogeal Obstruction From Mediastinal Compressive Tumors with Covered, Self-Expanding Metallic Z-Stents. Gastrointest Endosc. 1996; 42: 483-490.
    
  • Degregorio B, Katon RM , Poorman J. Clinical Utility of Ultrathin Endoscopy in Adult Patients. Gastrointest Endosc. 1997; 45: 303-306.
    
  • Zaman A, Katon RM . Push Enteroscopy for Obscure Gastrointestinal Bleeding Yields a High Incidence of Proximal Lesions Within Reach of a Standard Endoscope. Gastrointest Endosc. 1998; 47: 372-376.
    
  • Zaman A, Katon RM . Unsedated Per-Oral Endoscopy With a Video Ultrathin (UT) Endoscope: Patient Acceptance, Tolerance and Diagnostic Accuracy. Amer J Gastro. 1998; 93: 1260-1263.
    
  • Zaman A, Sheppard B, Katon RM . Total Peroral Intraoperative Enteroscopy For Obscure G.I. Bleeding Using a Dedicated Push Enteroscope. Gastrointest Endosc. 1999; 50: 506-510.
    
  • Zaman A, Mahn M, Katon RM , et al. Randomized Trial of Peroral vs Transanal Endoscopy Using an Ultrathin Videoendoscope. Gastrointest Endosc. 1999; 49: 279-284.
    
  • Gopal D, Zaman A, Katon RM . A Role for Transnasal Esophagogastroduodenoscopy in Patients Intolerant to the Oral Route. Gastrointest Endosc. 1999; 49: 379-381.
    
  • Shumaker DA, Zaman A, Katon RM . A Randomized Controlled Trial Comparing the Variable Stiffness Colonoscope, the Pediatric Colonoscope and the Adult Colonoscope. Gastrointest Endosc. 2002; 55: 172-179.
    
• Biosketch:
  
  • My focus for nearly 30 years has been the broad field of gastrointestinal endoscopy. My expertise has been nationally recognized and I have sat on the editorial boards of Gastroenterology (1977-1982) and Gastrointestinal Endoscopy (1983-1988 and 1996-2000). I have been appointed to various national committees of the ASGE including standards of practice, technology assessment and program selection committee.
    
    My endoscopic research has included important contributions in areas such as upper and lower GI bleeding, complications of endoscopy, flexible sigmoidoscopy, ERCP (biliary and pancreatic endoscopy), esophageal expandable stents, ultrathin endoscopy, small bowel enteroscopy and variable stiffness colonoscopy.
    
    The endoscopy unit at OHSU, under my direction provides state of the art techniques utilizing the most current videoendoscopic equipment available.