M
Michael J. O'Brien
Researcher at Tulane University
Publications - 573
Citations - 33878
Michael J. O'Brien is an academic researcher from Tulane University. The author has contributed to research in topics: Elbow & Medicine. The author has an hindex of 82, co-authored 550 publications receiving 31320 citations. Previous affiliations of Michael J. O'Brien include University of Missouri & Boston Children's Hospital.
Papers
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Journal ArticleDOI
Prevention of colorectal cancer by colonoscopic polypectomy. The National Polyp Study Workgroup.
Sidney J. Winawer,A G Zauber,M N Ho,Michael J. O'Brien,Leonard S. Gottlieb,S S Sternberg,Jerome D. Waye,Melvin Schapiro,John H. Bond,Joel F. Panish +9 more
TL;DR: The results of the National Polyp Study support the view that colorectal adenomas progress to adenocarcinomas, as well as the current practice of searching for and removing adenomatous polyps to prevent coloreCTal cancer.
Journal ArticleDOI
Colonoscopic Polypectomy and Long-Term Prevention of Colorectal-Cancer Deaths
Ann G. Zauber,Sidney J. Winawer,Michael J. O'Brien,Iris Lansdorp-Vogelaar,Marjolein van Ballegooijen,Benjamin F. Hankey,Weiji Shi,John H. Bond,Melvin Schapiro,Joel F. Panish,Stewart Et,Jerome D. Waye +11 more
TL;DR: Findings support the hypothesis that colonoscopic removal of adenomatous polyps prevents death from colorectal cancer.
Journal ArticleDOI
Serrated Lesions of the Colorectum: Review and Recommendations From an Expert Panel
Douglas K. Rex,Dennis J. Ahnen,John A. Baron,Kenneth P. Batts,Carol A. Burke,Randall W. Burt,John R. Goldblum,Jose G. Guillem,Charles J. Kahi,Matthew F. Kalady,Michael J. O'Brien,Robert D. Odze,Shuji Ogino,Susan Parry,Susan Parry,Dale C. Snover,Emina Torlakovic,Paul E. Wise,Joanne P. Young,James M. Church +19 more
TL;DR: It is recommended that all serrated lesions proximal to the sigmoid colon and allserrated lesions in the rectosigmoid >5 mm in size, be completely removed.
Journal ArticleDOI
Randomized Comparison of Surveillance Intervals after Colonoscopic Removal of Newly Diagnosed Adenomatous Polyps
Sidney J. Winawer,A G Zauber,Michael J. O'Brien,M N Ho,Lawrence J. Gottlieb,S S Sternberg,Jerome D. Waye,John H. Bond,Melvin Schapiro,Stewart Et +9 more
TL;DR: Colonoscopy performed three years after colonoscopic removal of adenomatous polyps detects important colonic lesions as effectively as follow-up colonoscopy after both one and three years.
Journal ArticleDOI
The National Polyp Study. Patient and polyp characteristics associated with high-grade dysplasia in colorectal adenomas.
Michael J. O'Brien,Sidney J. Winawer,Ann G. Zauber,Leonard S. Gottlieb,S S Sternberg,Barbara Diaz,G.Richard Dickersin,Stephen Ewing,Stephen Geller,Dennis Kasimian,Richard Komorowski,Arnold Szporn +11 more
TL;DR: Adenoma size and the extent of the villous component were found to be the major independent polyp risk factors associated with high-grade dysplasia (p less than 0.0001) in patients discovered to have one or more colorectal adenomas.