Kyle Graham Cologne, MD

Associate Professor of Clinical Surgery

Associate Program Director, Colorectal Surgery Residency

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A native of Southern California, Dr. Cologne joined Keck Medicine of USC in 2012 and specializes in laparoscopic and minimally invasive procedures for a variety of diseases, including colon and rectal cancer, complex endoscopic polyp removal, diverticulitis, inflammatory bowel disease, and the treatment and management of anorectal disorders such as hemorrhoids. He has performed more than 1,000 major colorectal procedures.

Dr. Cologne is board certified in general surgery and colorectal surgery. He has received numerous awards, including Pasadena, Los Angeles, and Castle Connolly Top Doctors on an annual basis, Compassionate Doctor, Patient’s Choice Award, and more.

Dr. Cologne believes every patient deserves an honest assessment and easy-to-understand plan for what can be complex or difficult colorectal problems.

Dr. Cologne completed his general surgery training in Chicago at Rush University and Cook County Medical Centers, followed by specialty training in Colon and Rectal Surgery. He serves as the Chair of the Department of Surgery Quality Committee and is the Physician Champion for the institution’s national quality improvement program. He has authored numerous book chapters and scientific manuscripts on colon and rectal as well as general surgery. He has research interests in surgical education, colon and rectal cancer, endoscopy, diverticulitis, inflammatory bowel disease and anorectal disorders. He serves as a section editor for the Diseases of the Colon and Rectum Journal, where he is also the host of a podcast. He also is a previous Social Media Committee Chair for the American Society of Colon and Rectal Surgeons (ASCRS), a past-president of the Southern California Chapter of the ASCRS, and serves as an ad-hoc reviewer for numerous scientific journals.


  • Rectal Cancer Survival for Residual Carcinoma In Situ VsPathologic Complete Response After Neoadjuvant Therapy. Dis Colon Rectum. 2024 Mar 18. . View in PubMed
  • Complete mesocolic excision and extended lymphadenectomy: Where should we stand? J Surg Oncol. 2024 Feb; 129(2):338-348.. View in PubMed
  • The American Society of Colon and Rectal Surgeons Clinical Practice Guidelines for the Management of Rectal Cancer 2023 Supplement Dis Colon Rectum. 2024 Jan 01; 67(1):18-31. . View in PubMed
  • Optimizing Appropriate Disposal of Unused Postoperative Opioid: What Happens to Unused Medication? Am Surg. 2023 Nov; 89(11):4395-4400.. View in PubMed
  • Assessing the Association Between Endoscopic Tattooing and Lymph Node Yield in Rectal Cancer J Surg Res. 2023 Jan; 281:37-44. . View in PubMed
  • Prevalence of and Risk Factors for Incidental Colonic Diverticulosis J Surg Res. 2022 Dec; 280:348-354. . View in PubMed
  • Endoscopy Reports for Rectosigmoid Tumors: Frequently Missing Key Information Needed for Surgical Planning J Surg Res. 2022 10; 278:325-330. . View in PubMed
  • “Unresectable” polyp management utilizing advanced endoscopic techniques results in high rate of colon preservation Surg Endosc. 2022 03; 36(3):2121-2128. . View in PubMed
  • Do or doughnut: A systematic review and pooled analysis on the utility of pathological evaluation of the anastomotic doughnut in oncological colorectal operations Colorectal Dis. 2022 01; 24(1):8-15. . View in PubMed
  • Dissecting the Perioperative Care Bundle Surg Clin North Am. 2021 Dec; 101(6):995-1006. . View in PubMed
  • Clinical Characteristics and Outcomes of Colorectal Cancer in the ColoCare Study: Differences by Age of Onset Cancers (Basel). 2021 Jul 29; 13(15). . View in PubMed
  • Outcomes of colostomy takedown following Hartmann’s procedure: successful restoration of continuity comes with a high risk of morbidity Colorectal Dis. 2021 Apr; 23(4):967-974. . View in PubMed
  • LigaSure™ haemorrhoidectomy and the risk of postoperative bleeding Colorectal Dis. 2021 10; 23(10):2699-2705. . View in PubMed
  • The assessment of sarcopenia using psoas muscle thickness per height is not predictive of post-operative complications in IBD Scand J Gastroenterol. 2021 10; 56(10):1175-1181. . View in PubMed
  • Differentiating What is hot from what is scientifically sound Surgery. 2021 09; 170(3):657-658. . View in PubMed
  • COVID-19 Impact on Colorectal Daily Practice-How Long Will It Take to Catch Up? J Gastrointest Surg. 2021 01; 25(1):260-268.. View in PubMed
  • Characteristics of Early-Onset vs Late-Onset Colorectal Cancer: A Review JAMA Surg. 2021 09 01; 156(9):865-874. . View in PubMed
  • Full-Thickness Laparoendoscopic Excision for Management of Complex Colon Polyps Dis Colon Rectum. 2021 12 01; 64(12):1559-1563. . View in PubMed
  • Reduction of Opioid Overprescribing and Use Following Standardized Educational Intervention: A Survey of Patient Experiences Following Anorectal Procedures Dis Colon Rectum. 2021 09 01; 64(9):1129-1138. . View in PubMed
  • Phase II Trial of Neoadjuvant Bevacizumab with Modified FOLFOX7 in Patients with Stage II and III Rectal Cancer Oncologist. 2020 12; 25(12):e1879-e1885. . View in PubMed
  • Laparoscopic Approach to Rectal Cancer-The New Standard? Front Oncol. 2020; 10:1239.. View in PubMed
  • Postoperative Considerations in Inflammatory Bowel Disease Surg Clin North Am. 2019 Dec; 99(6):1095-1109. . View in PubMed
  • Less is more: creation and validation of a novel, affordable suturing simulator for anorectal surgery Tech Coloproctol. 2019 Nov 11. . View in PubMed
  • Percutaneous drainage for hinchey Ib and II acute diverticulitis with abscess improves outcomes Turk J Gastroenterol. 2019 Nov; 30(11):976-983. . View in PubMed
  • Nonviral Sexually Transmitted Diseases Clin Colon Rectal Surg. 2019 Sep; 32(5):358-363. . View in PubMed
  • Procedure for Prolapse and Hemorrhoids Complication Solutions: Repair of a Completely Closed Off Rectum Dis Colon Rectum. 2018 Jun; 61(6):751. . View in PubMed
  • #colorectalresearch: Introducing a Disruptive Technology for Academic Surgery in the Social Media Age Dis Colon Rectum. 2018 Mar; 61(3):279-280. . View in PubMed
  • Social media engagement amongst 2017 colorectal surgery Tripartite Meeting attendees: updates on contemporary social media use Colorectal Dis. 2018 05; 20(5):O114-O118. . View in PubMed
  • Guest Editor’s Comment: #SoMe Clin Colon Rectal Surg. 2017 Sep; 30(4):225-226. . View in PubMed
  • Operative management of diverticulitis in a tertiary care center Am J Surg. 2017 Jul; 214(1):37-41. . View in PubMed
  • Arginine/Asymmetric Dimethylarginine Ratio in Colorectal Surgery J Clin Med Res. 2017 Jul; 9(7):555-559. . View in PubMed
  • Advances in Laparoscopic Colorectal Surgery Surg Clin North Am. 2017 Jun; 97(3):547-560. . View in PubMed
  • Selected Techniques of Anal Fistula Surgery from Antiquity Through the Early 20th Century Illustrated Dis Colon Rectum. 2017 Jun; 60(6):636-646. . View in PubMed
  • Treatment-Based Three-Dimensional Classification and Management of Anorectal Infections World J Surg. 2017 02; 41(2):574-589. . View in PubMed
  • Factors Associated with a Short (<2 Days) or Long (>10 Days) Length of Stay after Colectomy: A Multivariate Analysis of over 400 Patients Am Surg. 2016 Oct; 82(10):960-963. . View in PubMed
  • Am J Surg. 2016 Sep; 212(3):433-9. . View in PubMed
  • Blood Transfusion Following Colorectal Resection: What Is the Real Story? Dis Colon Rectum. 2016 May; 59(5):359-60.. View in PubMed
  • Reply to: Social media and surgery: An alternative view Surgery. 2016 Mar; 159(3):978-9. . View in PubMed
  • Medically Treated Diverticular Abscess Associated With High Risk of Recurrence and Disease Complications Dis Colon Rectum. 2016 Mar; 59(3):208-15. . View in PubMed
  • Management of Complex Anal Fistulas Clin Colon Rectal Surg. 2016 Mar; 29(1):43-9. . View in PubMed
  • Long-term follow-up of Fournier’s Gangrene in a tertiary care center J Surg Res. 2016 11; 206(1):175-181. . View in PubMed
  • A Novel Classification, Evaluation, and Treatment Strategy for Supralevator Abscesses Dis Colon Rectum. 2015 Nov; 58(11):1109-10. . View in PubMed
  • Probing the Utility of the Rectal Examination Ann Emerg Med. 2015 Sep; 66(3):240-2. . View in PubMed
  • Social media is a necessary component of surgery practice Surgery. 2015 Sep; 158(3):857-62. . View in PubMed
  • Three-dimensional Laparoscopy: Does Improved Visualization Decrease the Learning Curve Among Trainees in Advanced Procedures? Surg Laparosc Endosc Percutan Tech. 2015 Aug; 25(4):321-3.. View in PubMed
  • Use of the American College of Surgeons NSQIP Surgical Risk Calculator for Laparoscopic Colectomy: how good is it and how can we improve it? J Am Coll Surg. 2015 Mar; 220(3):281-6.. View in PubMed
  • Cost of practice in a tertiary/quaternary referral center: is it sustainable? Tech Coloproctol. 2014 Nov; 18(11):1035-9.. View in PubMed
  • Effects of diabetes mellitus in patients presenting with diverticulitis: clinical correlations and disease characteristics in more than 1,000 patients J Trauma Acute Care Surg. 2014 Mar; 76(3):704-9. . View in PubMed
  • Recurrent drug-induced ANCA vasculitis in a patient with Crohn’s colitis treated with infliximab: a potential contraindication to immunosuppressive therapy Am Surg. 2012 Dec; 78(12):1406-8. . View in PubMed
  • Rectal foreign bodies: what is the current standard? Clin Colon Rectal Surg. 2012 Dec; 25(4):214-8.. View in PubMed
  • Incisionless laparoscopic total proctocolectomy with ileal J-pouch anal anastomosis Am Surg. 2011 Jul; 77(7):929-32. . View in PubMed
  • Treatment of frostbite with subatmospheric pressure therapy J Burn Care Res. 2008 Nov-Dec; 29(6):1012-4. . View in PubMed
  • The impact of obesity on severely injured children and adolescents J Pediatr Surg. 2006 Jan; 41(1):88-91; discussion 88-91. . View in PubMed