Publications Print Nguyen A, James DR, Dozois EJ, Kelley SR, Mathis KL. The Role of Adjuvant Chemotherapy in ypT0N0 Rectal Adenocarcinoma. J Gastrointest Surg. 2019 Feb 6 Epub 2019 Feb 06 View PubMed Shahjehan F, Kasi PM, Habermann E, Day CN, Colibaseanu DT, Mathis KL, Larson DW, Merchea A. Trends and outcomes of sphincter-preserving surgery for rectal cancer: a national cancer database study. Int J Colorectal Dis. 2019 Feb; 34 (2):239-245 Epub 2018 Oct 02 View PubMed Grass F, Lovely JK, Crippa J, Mathis KL, Hubner M, Larson DW. Early Acute Kidney Injury Within an Established Enhanced Recovery Pathway: Uncommon and Transitory. World J Surg. 2019 Jan 25 [Epub ahead of print] View PubMed McKenna NP, Bergquist JR, Habermann EB, Chua HK, Kelley SR, Mathis KL. Surgery and chemotherapy are associated with improved overall survival in anal adenocarcinoma: results of a national cohort study. Int J Colorectal Dis. 2019 Jan 11 [Epub ahead of print] View PubMed Duchalais E, Larson DW, Machairas N, Mathis KL, Dozois EJ, Kelley SR. Outcomes of Early Removal of Urinary Catheter Following Rectal Resection for Cancer. Ann Surg Oncol. 2019 Jan; 26 (1):79-85 Epub 2018 Oct 23 View PubMed McKenna NP, Potter DD, Bews KA, Glasgow AE, Mathis KL, Habermann EB. Ileal-pouch anal anastomosis in pediatric NSQIP: Does a laparoscopic approach reduce complications and length of stay? J Pediatr Surg. 2019 Jan; 54 (1):112-117 Epub 2018 Oct 05 View PubMed Grass F, Lovely JK, Crippa J, Ansell J, Hubner M, Mathis KL, Larson DW. Comparison of recovery and outcome after left and right colectomy. Colorectal Dis. 2018 Dec 26 [Epub ahead of print] View PubMed Scow JS, Mathis KL. Gastrointestinal stromal tumors (gist) of the anus: A single institution experience. Turk J Gastroenterol. 2018 Nov 20 [Epub ahead of print] View PubMed Grass F, Hubner M, Lovely JK, Crippa J, Mathis KL, Larson DW. Ordering a Normal Diet at the End of Surgery-Justified or Overhasty? Nutrients. 2018 Nov 14; 10 (11) View PubMed Colibaseanu DT, Osagiede O, Spaulding AC, Frank RD, Merchea A, Mathis KL, Parker AS, Ailawadhi S. The Determinants of Palliative Care Use in Patients With Colorectal Cancer: A National Study. Am J Hosp Palliat Care. 2018 Oct; 35 (10):1295-1303 Epub 2018 Mar 26 View PubMed Duchalais E, Glyn Mullaney T, Spears GM, Kelley SR, Mathis K, Harmsen WS, Larson DW. Prognostic value of pathological node status after neoadjuvant radiotherapy for rectal cancer. Br J Surg. 2018 Oct; 105 (11):1501-1509 Epub 2018 Apr 17 View PubMed Danelich IM, Bergquist JR, Bergquist WJ, Osborn JL, Wright SS, Tefft BJ, Sturm AW, Langworthy DR, Mandrekar J, Devine RM, Kelley SR, Mathis KL, Pemberton JH, Jacob AK, Larson DW. Early Diuresis After Colon and Rectal Surgery Does Not Reduce Length of Hospital Stay: Results of a Randomized Trial. Dis Colon Rectum. 2018 Oct; 61 (10):1187-1195 View PubMed McKenna NP, Habermann EB, Glasgow AE, Mathis KL, Lightner AL. Risk factors for readmission following ileal pouch-Anal anastomosis: an American College of Surgeons National Surgical Quality Improvement Program analysis. J Surg Res. 2018 Sep; 229:324-331 Epub 2018 May 10 View PubMed McKenna NP, Bews KA, Behm KT, Mathis KL, Lightner AL, Habermann EB. Do Patients With Inflammatory Bowel Disease Have a Higher Postoperative Risk of Venous Thromboembolism or Do They Undergo More High-risk Operations? Ann Surg. 2018 Aug 30 [Epub ahead of print] View PubMed Duchalais E, Machairas N, Kelley SR, Landmann RG, Merchea A, Colibaseanu DT, Mathis KL, Dozois EJ, Larson DW. Does prolonged operative time impact postoperative morbidity in patients undergoing robotic-assisted rectal resection for cancer? Surg Endosc. 2018 Aug; 32 (8):3659-3666 Epub 2018 Mar 15 View PubMed Lightner AL, Shogan BD, Mathis KL, Larson DW, Duchalais E, Pemberton JH, Dozois EJ. Revisional and Reconstructive Surgery for Failing IPAA is Associated with Good Function and Pouch Salvage in Highly Selected Patients. Dis Colon Rectum. 2018 Aug; 61 (8):920-930 View PubMed McKenna NP, Mathis KL, Pemberton JH, Lightner AL. The Impact of Age at Time of Ileal Pouch Anal Anastomosis on Short and Long-Term Outcomes in Adults. Inflamm Bowel Dis. 2018 Jul 12; 24 (8):1857-1865 View PubMed Duchalais E, Machairas N, Kelley SR, Landmann RG, Merchea A, Colibaseanu DT, Mathis KL, Dozois EJ, Larson DW. Does obesity impact postoperative outcomes following robotic-assisted surgery for rectal cancer? Surg Endosc. 2018 Jul 9 Epub 2018 July 09 View PubMed Lightner AL, McKenna NP, Tse CS, Hyman N, Smith R, Ovsepyan G, Fleshner P, Crowell K, Koltun W, Ferrante M, D'Hoore A, Lauwers N, Verstockt B, Spinelli A, DiCandido F, Raffals LE, Mathis KL, Loftus EV Jr. Postoperative Outcomes in Ustekinumab-Treated Patients Undergoing Abdominal Operations for Crohn's Disease. J Crohns Colitis. 2018 Mar 28; 12 (4):402-407 View PubMed Lightner AL, Mathis KL, Tse CS, Pemberton JH, Shen B, Kochlar G, Singh A, Dulai PS, Eisenstein S, Sandborn WJ, Parry L, Stringfield S, Hudesman D, Remzi F, Loftus EV Jr. Postoperative Outcomes in Vedolizumab-Treated Patients Undergoing Major Abdominal Operations for Inflammatory Bowel Disease: Retrospective Multicenter Cohort Study. Inflamm Bowel Dis. 2018 Mar 19; 24 (4):871-876 View PubMed Collins D, Machairas N, Duchalais E, Landmann RG, Merchea A, Colibaseanu DT, Kelley SR, Mathis KL, Dozois EJ, Larson DW. Participation of Colon and Rectal Fellows in Robotic Rectal Cancer Surgery: Effect on Surgical Outcomes. J Surg Educ. 2018 Mar - Apr; 75 (2):465-470 Epub 2017 July 15 View PubMed Lightner AL, McKenna NP, Tse CS, Raffals LE, Loftus EV Jr, Mathis KL. Postoperative outcomes in vedolizumab-treated Crohn's disease patients undergoing major abdominal operations. Aliment Pharmacol Ther. 2018 Mar; 47 (5):573-580 Epub 2017 Dec 18 View PubMed Merchea A, Lovely JK, Jacob AK, Colibaseanu DT, Kelley SR, Mathis KL, Spears GM, Huebner M, Larson DW. Efficacy and Outcomes of Intrathecal Analgesia as Part of an Enhanced Recovery Pathway in Colon and Rectal Surgical Patients. Surg Res Pract. 2018; 2018:8174579 Epub 2018 Mar 01 View PubMed McKenna NP, Habermann EB, Glasgow AE, Mathis KL, Lightner AL. Risk factors for readmission following ileal pouch–anal anastomosis: an American College of Surgeons National Surgical Quality Improvement Program analysis Journal of Surgical Research. 2018; 229:324-31 Grass F, Mathis K. Novelties in treatment of locally advanced rectal cancer. F1000Res. 2018; 7 Epub 2018 Nov 29 View PubMed Lightner AL, McKenna NP, Moncrief S, Pemberton JH, Raffals LE, Mathis KL. Surgical Outcomes in Vedolizumab-Treated Patients with Ulcerative Colitis. Inflamm Bowel Dis. 2017 Dec; 23 (12):2197-2201 View PubMed McKenna NP, Mathis KL, Khasawneh MA, Dozois EJ, Larson DW, Pemberton JH, Lightner AL. Obese Patients Undergoing Ileal Pouch-Anal Anastomosis: Short-and Long-term Surgical Outcomes. Inflamm Bowel Dis. 2017 Dec; 23 (12):2142-2146 View PubMed Parker ME, Mathis KL, Kelley SR. Severity of diverticulitis in patients with polycystic kidney disease without transplantation. Int J Colorectal Dis. 2017 Dec; 32 (12):1767-1770 Epub 2017 Sept 30 View PubMed AlJamal YN, Mathis K, Dozois E. Risk free simulated environment for assessing the colorectal fellows technical skills Austin Journal of Surgery. 2017 Dec; 4 (5):1118 McKenna NP, Mathis KL, Khasawneh M, Shariq O, Dozois EJ, Larson DW, Lightner AL. Thirty-Day Hospital Readmission After Restorative Proctocolectomy and Ileal Pouch Anal Anastomosis for Chronic Ulcerative Colitis at a High-Volume Center. J Gastrointest Surg. 2017 Nov; 21 (11):1859-1864 Epub 2017 Aug 24 View PubMed Lightner AL, Fletcher JG, Pemberton JH, Mathis KL, Raffals LE, Smyrk T. Crohn's Disease of the Pouch: A True Diagnosis or an Oversubscribed Diagnosis of Exclusion? Dis Colon Rectum. 2017 Nov; 60 (11):1201-1208 View PubMed Lightner AL, Dattani S, Dozois EJ, Moncrief SB, Pemberton JH, Mathis KL. Pouch excision: indications and outcomes. Colorectal Dis. 2017 Oct; 19 (10):912-916 View PubMed Baek SJ, Lightner AL, Boostrom SY, Mathis KL, Cima RR, Pemberton JH, Larson DW, Dozois EJ. Functional Outcomes Following Laparoscopic Ileal Pouch-Anal Anastomosis in Patients with Chronic Ulcerative Colitis: Long-Term Follow-up of a Case-Matched Study. J Gastrointest Surg. 2017 Aug; 21 (8):1304-1308 Epub 2017 May 03 View PubMed McKenna NP, Behm KT, Ubl DS, Glasgow AE, Mathis KL, Pemberton JH, Habermann EB, Cima RR. Analysis of Postoperative Venous Thromboembolism in Patients With Chronic Ulcerative Colitis: Is It the Disease or the Operation? Dis Colon Rectum. 2017 Jul; 60 (7):714-722 View PubMed Spindler BA, Bergquist JR, Thiels CA, Habermann EB, Kelley SR, Larson DW, Mathis KL. Incorporation of CEA Improves Risk Stratification in Stage II Colon Cancer. J Gastrointest Surg. 2017 May; 21 (5):770-777 Epub 2017 Mar 13 View PubMed Lightner AL, Moncrief SB, Smyrk TC, Pemberton JH, Haddock MG, Larson DW, Dozois EJ, Mathis KL. Long-standing Crohn's disease and its implication on anal squamous cell cancer management. Int J Colorectal Dis. 2017 May; 32 (5):661-666 Epub 2017 Mar 14 View PubMed Lightner AL, Mathis KL, Dozois EJ, Hahnsloser D, Loftus EV Jr, Raffals LE, Pemberton JH. Results at Up to 30 Years After Ileal Pouch-Anal Anastomosis for Chronic Ulcerative Colitis. Inflamm Bowel Dis. 2017 May; 23 (5):781-790 View PubMed Lightner AL, Pemberton JH, Dozois EJ, Larson DW, Cima RR, Mathis KL, Pardi DS, Andrew RE, Koltun WA, Sagar P, Hahnloser D. The surgical management of inflammatory bowel disease. Curr Probl Surg. 2017 Apr; 54 (4):172-250 Epub 2017 Feb 21 View PubMed Thiels CA, Bergquist JR, Krajewski AC, Lee HE, Nelson H, Mathis KL, Habermann EB, Cima RR. Outcomes of Primary Colorectal Sarcoma: A National Cancer Data Base (NCDB) Review. J Gastrointest Surg. 2017 Mar; 21 (3):560-568 Epub 2017 Jan 17 View PubMed Lightner AL, Raffals LE, Mathis KL, Cima RR, Tse CS, Pemberton JH, Dozois EJ, Loftus EV. Postoperative Outcomes in Vedolizumab-Treated Patients Undergoing Abdominal Operations for Inflammatory Bowel Disease. J Crohns Colitis.2017 Feb;11:(2):185-190. Lightner AL, Pemberton JH, Dozois EJ, Larson DW, Cima RR, Mathis KL, Pardi DS, Andrew RE, Koltun WA, Sagar P, Hahnloser D. In brief Current Problems in Surgery. 2017; 54: (4)163-6. Bergquist JR, Thiels CA, Spindler BA, Shubert CR, Hayman AV, Kelley SR, Larson DW, Habermann EB, Pemberton JH, Mathis KL. Benefit of Postresection Adjuvant Chemotherapy for Stage III Colon Cancer in Octogenarians: Analysis of the National Cancer Database. Dis Colon Rectum. 2016 Dec; 59 (12):1142-1149 View PubMed Khasawneh MA, McKenna NP, Abdelsattar ZM, Johnson A, Dozois EJ, Pemberton JH, Mathis KL. Impact of BMI on Ability to Successfully Create an IPAA. Dis Colon Rectum. 2016 Nov; 59 (11):1034-1038 View PubMed Thiels CA, Hanson KT, Yost KJ, Mathis KL, Cima RR, Zielinski MD, Habermann EB. Achieving a 5-star rating: Analysis of Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) scores among patients undergoing elective colorectal operations. Surgery. 2016 Oct; 160 (4):902-914 Epub 2016 July 27 View PubMed Thiels CA, Naik ND, Bergquist JR, Spindler BA, Habermann EB, Kelley SR, Wolff BG, Mathis KL. Survival following synchronous colon cancer resection. J Surg Oncol. 2016 Jul; 114: (1)80-5. View PubMed Thiels CA, Shenoy CC, Ubl DS, Habermann EB, Kelley SR, Mathis KL. Rates, trends, and short-term outcomes of colorectal resections for endometriosis: An ACS-NSQIP review. Int J Surg. 2016 Jul; 31:5-9 Epub 2016 May 20 View PubMed Baek SJ, Dozois EJ, Mathis KL, Lightner AL, Boostrom SY, Cima RR, Pemberton JH, Larson DW. Safety, feasibility, and short-term outcomes in 588 patients undergoing minimally invasive ileal pouch-anal anastomosis: a single-institution experience. Tech Coloproctol. 2016 Jun; 20 (6):369-74 Epub 2016 Apr 27 View PubMed Martinez Ugarte ML, Lightner AL, Colibaseanu D, Khanna S, Pardi DS, Dozois EJ, Mathis KL. Clostridium difficile infection after restorative proctocolectomy and ileal pouch anal anastomosis for ulcerative colitis. Colorectal Dis. 2016 May; 18 (5):O154-7 View PubMed Bergquist JR, Thiels CA, Shubert CR, Habermann EB, Hayman AV, Zielinski MD, Mathis KL. Is Chemotherapy or Radiation Therapy in Addition to Surgery Beneficial for Locally Advanced Rectal Cancer in the Elderly? A National Cancer Data Base (NCDB) Study. World J Surg. 2016 Feb; 40 (2):447-55 View PubMed Thiels CA, Bergquist JR, Meyers AJ, Johnson CL, Behm KT, Hayman AV, Habermann EB, Larson DW, Mathis KL. Outcomes with multimodal therapy for elderly patients with rectal cancer. Br J Surg. 2016 Jan; 103: (2)e106-14. View PubMed Singh S, Ding NS, Mathis KL, Dulai PS, Farrell AM, Pemberton JH, Hart AL, Sandborn WJ, Loftus EV Jr. Systematic review with meta-analysis: faecal diversion for management of perianal Crohn's disease. Aliment Pharmacol Ther. 2015 Oct; 42 (7):783-92 Epub 2015 Aug 11 View PubMed Bikhchandani J, Ong GK, Dozois EJ, Mathis KL. Outcomes of salvage surgery for cure in patients with locally recurrent disease after local excision of rectal cancer. Dis Colon Rectum. 2015 Mar; 58(3):283-7. View PubMed Mathis KL, Pemberton JH. New developments in colorectal surgery. Curr Opin Gastroenterol. 2015 Jan; 31(1):62-8. View PubMed Imam MH, Eaton JE, Puckett JS, Loftus EV Jr, Mathis KL, Gossard AA, Talwalkar JA, Lindor KD. Neoplasia in the ileoanal pouch following colectomy in patients with ulcerative colitis and primary sclerosing cholangitis. J Crohns Colitis. 2014 Oct; 8: (10)1294-9. View PubMed Colibaseanu DT, Dozois EJ, Mathis KL, Rose PS, Ugarte ML, Abdelsattar ZM, Williams MD, Larson DW. Extended sacropelvic resection for locally recurrent rectal cancer: can it be done safely and with good oncologic outcomes? Dis Colon Rectum. 2014 Jan; 57: (1)47-55. View PubMed Mathis KL, Nelson H. Controversies in laparoscopy for colon and rectal cancer. Surg Oncol Clin N Am. 2014 Jan; 23(1):35-47. Epub 2013 Oct 23. View PubMed Mathis KL, Cima RR. Quality assurance in colon and rectal cancer surgery. Surg Oncol Clin N Am. 2014 Jan; 23(1):11-23. Epub 2013 Oct 26. View PubMed Boostrom SY, Mathis KL, Pendlimari R, Cima RR, Larson DW, Dozois EJ. Risk of neoplastic change in ileal pouches in familial adenomatous polyposis. J Gastrointest Surg. 2013 Oct; 17 (10):1804-8 Epub 2013 Aug 15 View PubMed Abdelsattar ZM, Mathis KL, Colibaseanu DT, Merchea A, Bower TC, Larson DW, Dozois EJ. Surgery for locally advanced recurrent colorectal cancer involving the aortoiliac axis: can we achieve R0 resection and long-term survival? Dis Colon Rectum. 2013 Jun; 56: (6)711-6. View PubMed Mathis KL, Green EM, Sargent DJ, Delaney C, Simmang CL, Nelson H. Surgical quality surrogates do not predict colon cancer survival in the setting of technical credentialing: a report from the prospective COST trial. Ann Surg. 2013 Jan; 257(1):102-7. View PubMed Mathis KL, Boostrom SY, Pemberton JH. New developments in colorectal surgery. Curr Opin Gastroenterol. 2013 Jan; 29(1):72-8. View PubMed Colibaseanu DT, Mathis KL, Abdelsattar ZM, Larson DW, Haddock MG, Dozois EJ. Is curative resection and long-term survival possible for locally re-recurrent colorectal cancer in the pelvis? Dis Colon Rectum. 2013 Jan; 56: (1)14-9. View PubMed Mathis KL, Nelson H. Randomized controlled trials in surgical oncology: where do we stand? Surg Oncol Clin N Am. 2012 Jul; 21(3):449-66, ix. Epub 2012 Apr 17. View PubMed Mathis KL, Larson DW, Dozois EJ, Cima RR, Huebner M, Haddock MG, Wolff BG, Nelson H, Pemberton JH. Outcomes following surgery without radiotherapy for rectal cancer. Br J Surg. 2012 Jan; 99(1):137-43 Epub 2011 Nov 3. View PubMed Boostrom SY, Mathis KL, Pemberton JH. Laparoscopic versus open surgery in Crohn's disease. Inflammatory Bowel Disease Monitor. 2012; 13(2):43-50. Mathis KL, Larson DW, Dozois , EJ, Cima , RR, Huebner , M, Haddock , MG, Wolff , BG, Nelson , H, Pemberton , JH. Authors' Reply: Outcomes Following Surgery Without Radiotherapy for Rectal Cancer Br J Surg.2012;99:(6)879. Mathis KL, Benavente-Chenhalls LA, Dozois EJ, Wolff BG, Larson DW. Short- and long-term surgical outcomes in patients undergoing proctocolectomy with ileal pouch-anal anastomosis in the setting of primary sclerosing cholangitis. Dis Colon Rectum. 2011 Jul; 54(7):787-92. View PubMed Levitt MA, Mathis KL, Pemberton JH. Surgical treatment for constipation in children and adults. Best Pract Res Clin Gastroenterol. 2011 Feb; 25(1):167-79. View PubMed Mathis KL, Cima RR, Pemberton JH. New developments in colorectal surgery. Curr Opin Gastroenterol. 2011 Jan; 27(1):48-53. View PubMed Mathis KL, Dozois EJ, Grewal MS, Metzger P, Larson DW, Devine RM. Malignant risk and surgical outcomes of presacral tailgut cysts. Br J Surg. 2010 Apr; 97(4):575-9. View PubMed Mathis KL, Hoskin TL, Boughey JC, Crownhart BS, Brandt KR, Vachon CM, Grant CS, Degnim AC. Palpable presentation of breast cancer persists in the era of screening mammography. J Am Coll Surg. 2010 Mar; 210: (3)314-8. View PubMed Reid-Lombardo KM, Mathis KL, Wood CM, Harmsen WS, Sarr MG. Frequency of extrapancreatic neoplasms in intraductal papillary mucinous neoplasm of the pancreas: implications for management. Ann Surg. 2010 Jan; 251(1):64-9. View PubMed Mathis KL, Dozois EJ, Larson DW, Cima RR, Wolff BG, Pemberton JH. Outcomes in patients with ulcerative colitis undergoing partial or complete reconstructive surgery for failing ileal pouch-anal anastomosis. Ann Surg. 2009 Mar; 249(3):409-13. View PubMed Mathis KL, Nelson H, Pemberton JH. Can unresectable colorectal cancer be cured? Adv Surg. 2009; 43:211-9 View PubMed Mathis KL, Nelson H, Pemberton JH, Haddock MG, Gunderson LL. Unresectable colorectal cancer can be cured with multimodality therapy. Ann Surg. 2008 Oct; 248 (4):592-8 View PubMed Rohrer AJ, Porterfield JR Jr, Grinberg GG, Mathis KL, Farley DR. Acute epigastric pain with an obscure origin. Contemp Surg. 2008 Jul; 64(7):321-4. Mathis KL, Dozois EJ, Larson DW, Cima RR, Sarmeinto JM, Wolff BG, Heimbach JK, Pemberton JH. Ileal pouch-anal anastomosis, liver transplantation for ulcerative colitis complicated by primary sclerosing cholangitis. Br J Surg. 2008 May 21. Benavente-Chenhalls L, Mathis KL, Dozois EJ, Cima RR, Pemberton JH, Larson DW. Laparoscopic ileal pouch-anal anastomosis in patients with chronic ulcerative colitis and primary sclerosing cholangitis: a case-matched study. Dis Colon Rectum. 2008 May; 51(5):549-53. Epub 2008 Mar 04. View PubMed Mathis KL, Dozois EJ, Larson DW, Cima RR, Sarmiento JM, Wolff BG, Heimbach JK, Pemberton JH. Outcomes in Patients Requiring Ileal Pouch-Anal Anastomosis and Orthotopic Liver Transplantation for Chronic Ulcerative Colitis Complicated by Primary Sclerosing Cholangitis. British Journal of Surgery. 2008; 95(7):882-6. Mathis KL, Farley DR. Operative management of symptomatic duodenal diverticula. Am J Surg. 2007 Mar; 193(3):305-8; discussion 308-9. View PubMed Mathis KL, Wiegmann DA. Construct Validation of a Laparoscopic Simulator. Simulation in Healthcare. 2007; 2(3):178-82. Podgaetz E, Mathis KL, Farley DR. Imaging in Breast Cancer Detection: Mammography, Ultrasound, MRI and PET: Friends or Foes? Contemporary Surgery. 2006; 62(8):365-8. PST-20226720 Publications