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David E. Cohn, MD

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Associate Professor of Gynecologic Oncology, The Ohio State University






Clinical Background and Robotic Expertise

Years in practice: 10
Board Certified: Yes
Medical School: Georgetown University School of Medicine (Washington, D.C.)
Residency: University of Washington Medical Center (Seattle)
Fellowship: Washington University School of Medicine (St. Louis, MO)
Robotic Training: The Ohio State University Medical Center
Annual number of robotic procedures performed: 100

Dr. Cohn has been performing robotic surgery for gynecologic cancers since 2006. He performs robotic hysterectomies, robotic radical hysterectomies, and robotic lymph node dissections for gynecologic conditions including cancer.  He has had the opportunity to research robotic surgery for gynecologic cancers, and has published over 10 papers on the topic.  He has lectured locally and nationally regarding robotic surgery for gynecologic cancers, and has been involved in the training of other gynecologists and gynecologic oncologists in robotic surgery.

The Ohio State University's James Cancer Hospital is a national leader in robotic surgery for gynecologic cancers. With five gynecologic oncologists performing robotic procedures, we are expected to complete approximately 1,000 major robotic surgical cases by 2010. Our group has published extensively on robotic surgery for patients with gynecologic cancers.  We are actively researching the outcomes of gynecologic cancer robotic surgery. Through our use of and research into robotic surgery for gynecologic cancers, the Division of Gynecologic Oncology at the Ohio State University will continue to be a national leader in the field.

Patient Outcomes

Average operation time: 180 minutes
Conversion to open surgery: 3%
Reoperation rate (30 days): 1%
Average blood loss: 25-50 ml per case
Transfusion rate: 1%
Hospital discharge day after surgery/or avg length of stay: 23 hours

Presentations on Robotic Surgery

Columbus Nurses Oncology Society, Columbus, OH, “Minimally invasive robotic surgery for patients with gynecologic cancers”

Ohio State University, Lecture to the Wisconsin Surgical Society, “Robotic surgery for gynecologic cancers”

Aultman Hospital, Canton, Ohio, “Robotic applications in gynecologic surgery”

Thirty-Sixth Annual Meeting of the Western Association of Gynecologic Oncologists, Sunriver, Ore., “Robotic hysterectomy and lymphadenectomy for surgical staging of endometrial cancer: The initial Ohio State experience”

Research and Fellowship

Intuitive Surgical, Inc., $75,000 (Cohn, PI)
Submitted December 2008
“Evaluation of postoperative pain and quality of life in patients undergoing either robotic or open laparotomy approach for staging of endometrial cancer at the Ohio State University Medical Center”

Fellows Robotic Surgery Competency Program, Society of Gynecologic  Oncologists

Scholarly Publications

Seamon, L., Cohn, D., Valmadre, S., Richardson, D., Jayjohn, L., Jenson, C., Lee, K., Travis, J., Nickerson, E., & Fowler, J.. Robotic hysterectomy and lymphadenectomy for endometrial cancer: The Ohio State University method. J Robotic Surgery 2008; 110:269

Seamon, L., Backes, F., Resnick KE, Cohn DE. Robotic trocar site small bowel evisceration after gynecologic cancer surgery. Obstet Gynecol 2008; 112:462-4.

Seamon, L., Cohn, D., Richardson, D., Valmadre, S., Carlson, M., Phillips, G., & Fowler, J. Robotic hysterectomy and pelvic-aortic lymphadenectomy for endometrial cancer. Obstet Gynecol 2008; 112:1207-13

Seamon, L., Cohn, D., Henretta, M., Kim, K., Carlson, M., Phillips, G., & Fowler, J. Minimally invasive comprehensive surgical staging for endometrial cancer: Robotics or laparoscopy? Gynecol Oncol 2009; 113:36-41.

Seamon, L., Fowler, J., Richardson, D., Carlson, M., Valmadre, S., Phillips, G., & Cohn, D. A detailed analysis of the learning curve: Robotic hysterectomy and pelvic-aortic lymphadenectomy for endometrial cancer. Gynecol Oncol 2009; 114:162-7

Seamon LG, Bryant SA, Rheuame PS, Kimball KJ, Huh WK, Fowler JM, Cohn DE.  Comprehensive surgical staging for endometrial cancer in obese patients:  Comparing robotics and laparotomy. Obstet Gynecol 2009;114:16-21

Seamon LG, Cohn DE, Richardson DL, Hurt JD, Nickerson EC, Fowler JM.  Robotic pelvic and aortic lymphadenectomy for endometrial cancer: The console surgeon’s perspectives on surgical technique and directing the assistant.  J Minim Invasiv Gynecol 17(2): 180-185, 2010

Kim, K., Seamon, L., Fowler, J., & Cohn, D. Initial experience with abdominal, laparoscopic, and robotic endometrial cancer staging surgery: A single surgeon’s experience at the beginning of the learning curve. In preparation.

Contact Information

For more information about Dr. Cohn and robotic surgery at Ohio State or to make an appointment to speak with one of our robotic surgery experts, please call us at