St Paul's Hospital - Providence Health CareColorectal Surgery

Manoj J. Raval, M.D., M.Sc., F.R.C.S.C.

Manoj J. Raval  M.D. M.Sc. F.R.C.S.C width=

Dr. Raval is a specialist in colon and rectal surgery at St. Paul’s Hospital and Clinical Assistant Professor of Surgery at the University of British Columbia. 

He was born and grew up in the Vancouver area.  He graduated from medical school at UBC in 1998 and finished his residency in General Surgery at the University of Calgary in 2004.  He then went on to subspecialty fellowship training in Colon and Rectal Surgery at the University of Toronto under the mentorship of Drs. Robin McLeod, Zane Cohen, Helen Macrae, Richard Reznick, Ted Ross and Marcus Burnstein.  While in Toronto he also completed a Master of Science degree in Clinical Epidemiology.  He was recruited to the Department of Surgery at St. Paul's Hospital and UBC in 2006.

Dr. Raval also works closely with radiation and medical oncologists at the BC Cancer Agency.  Within the BCCA’s Surgical Oncology Network, he is the Chair of the Colorectal Surgery Tumour Group, whose mandate is to promote excellence in the surgical treatment of colorectal cancer for British Columbians.  He has headed a number of initiatives through the BC Cancer Agency, including development of Colorectal Cancer Care Pathway maps for both patients and physicians.

Within the field of colon and rectal surgery, Dr. Raval has a particular interest in laparoscopic colorectal surgery, colorectal cancer, colonoscopy, inflammatory bowel disease and the pelvic pouch procedure. His research interests include patient outcomes in these areas.  Dr. Raval also enjoys teaching medical students and residents in general surgery and other specialties.  He also teaches other general surgeons in special operative techniques for colon and rectal surgery.

Publications

Raval MJ. Evidence-based reviews in surgery group. Clinical reviewof: HPV vaccine against HPV infection and anal cancer. Dis Colon Rectum.  (Accepted for publication.)

Heidary B, Phang PT, Raval MJ, Brown CJ. Transanal endoscopic microsurgery: A review. Dis Colon Rectum (Accepted for publication.)

Faulds J, McGahan CE, Phang PT, Raval MJ, Brown CJ.  Differences between referred and non-referred patients in cancer research. Can J Surg. (Accepted for publication.)

Planting A, Phang PT, Raval MJ, Brown CJ. Transanal endoscopic microscopic. Impact on fecal incontinence and quality of life. Can J Surg. (Accepted for publication.)

Kennecke H, Lim H, Woods R, McGahan CE, Hay J, Raval MJ, Johal B. Outcomes of unselected patients with pathologic T3N0 rectal cancer. Radiother Oncol 2012;105:214-9.

Aslani N, Lobo-Prabhu K, Heidary B, Phang T, Raval MJ, Brown CJ. Outcomes of laparoscopic colon cancer surgery in a population-based cohort in British Columbia: Are they as good as the clinical trials?  Am J Surg 2012;204:411-5.

Phang PT, Woods R, Brown CJ, Raval MJ, Cheifetz R, Kennecke H.  Effect of systematic education courses on rectal cancer treatments in a population. Am J Surg 2011;201:635-9.

Krajewski SK, Brown J, Phang TP, Raval MJ, Brown CJ. The impact of computed tomography scanning of the abdomen on clinical outcomes in patients with acute right lower quadrant pain – A meta-analysis. Can J Surg 2011;54:43-53.

Dodi G, Jongen J, de la Portilla F, Raval MJ, Altomare DF, Lehur P-A. A non comparative, multicenter study to evaluate efficacy and safety of NASHA/Dx gel for the treatment of fecal incontinence. Gastro Res Pract vol. 2010, Article ID 467136, 10 pages, 2010. doi:10.1155/2010/467136.

Chung W, Ko D, Sun C, Raval MJ, Brown CJ, Phang PT. Outcomes of anal fistula surgery in patients with inflammatory bowel disease. Am J Surg 2010;199:609-13.

Phang PT, McGahan CE, McGregor G, MacFarlane JK, Brown CJ, Raval MJ, Cheifetz R, Hay JH. Effects of change in rectal cancer management on outcomes in British Columbia. Can J Surg 2010;53:225-31.

Phang PT, Cheifetz RE, Brown CJ, Raval MJ. Revisiting rectal cancer management in British Columbia. BCMJ 2010;52:510-13.

Raval MJ, Evidence-Based Reviews in Surgery Group. Methodological review: Defunctioning stoma reduces anastomotic leakage after low anterior resection of rectum for cancer. Dis Colon Rectum 2009;52:1-3.

Chung W, Kazemi P, Ko D, Sun C, Brown CJ, Raval MJ, Phang PT. Anal fistula plug and fibrin glue versus conventional treatment in repair of complex anal fistulas. Am J Surg 2009;197:604-8.

Brown CJ, Raval MJ. Advances in minimally invasive surgery in the treatment of colorectal cancer. Exp Rev Anticancer Ther 2008;8:111-23.

Murata A, Brown CJ, Raval MJ, Phang PT. Impact of short-course radiotherapy and low anterior resection on quality of life and bowel funciton in primary rectal cancer. Am J Surg 2008;195:611-5; discussion 615.

Raval MJ, Schnitzler M, O’Connor BI, Cohen Z, McLeod RS. Improved outcome due to increased experience and individualized management of leaks after ileal pouch-anal anastomosis.  Ann Surg 2007;246:763-70.

Raval MJ, Attard JA, Sigalet DL, Afrouzian M, Martin GR, Buie WD. The effects of systemic hypoxia on colon anastomotic healing: An animal model.  Dis Colon Rectum 2005;48:1460-70.

Raval MJ. Five months and counting. BCMJ 1997;39:650-1.

Raval MJ, Lund AJ. The mentorship experience. BCMJ 1997;39:532.

Lund AJ, Raval MJ. An alternative proposal. BCMJ 1997;39:236-9.

Chew BH, Lund AJ, Raval MJ. Students’ opinion of the new curriculum. Education Matters 1997;3.

Raval MJ, Chew BH. Medical students prepare exams for the new curriculum. Education Matters 1996;2.

Raval MJ, Lund AJ, Ip J. Introductory clinical handbook for medical students. 1997. (UBC Press.)

Raval MJ, The effects of tenotomy on programmed cell death of myofibers in the red-eared turtle, Pseudemys scripta elegans. January 1993 – May 1994. (Bachelor’s Thesis.) Supervisor: PR Lennard.

Conference Proceedings & Abstracts

Moore S, McGrail KM, Karimuddin AA, Phang PT, Raval MJ, Brown CJ. The impact of preoperative infliximab treatment on rates of colectomy in severe ulcerative colitis. American Society of Colon and Rectal Surgeons Annual Meeting. Phoenix, USA. April 2013 [Podium]

Schornagel IL, Raval MJ, Phang PT, Brown CJ. Recurrence of rectal adenomas after transanal endoscopic microsurgery. American Society of Colon and Rectal Surgeons Annual Meeting. Phoenix, USA. April 2013 [Poster]

Brown CJ, Samuels J, Chiu A, Chan H, Phang PT, Raval MJ. Incisional hernias and bowel obstruction after open versus laparoscopic colon resection. BC Surgical Society Annual Meeting. Sun Peaks, BC, Canada. March 2013 [Podium]

Chiu A, Chan YT, Brown CJ, Raval MJ, Phang PT. Failing to undergo reversal of a temporary diverting stoma after low anterior resection. BC Surgical Society Annual Meeting. Sun Peaks, BC, Canada. March 2013 [Podium]

Leon-Carlyle M, Brown JA, Hamm J, Phang PT, Raval MJ, Brown CJ. The accuracy of endorectal ultrasound in staging rectal lesions in patients undergoing transanal endoscopic microsurgery. Canadian Surgery Forum. Calgary, Alberta, Canada. September 2012. [Poster]

Brown CJ, Kalikias S, Heidary B, Raval D, Phang PT, Raval MJ. Retrospective comparison of early complications rate in open vs. suture closure of rectal lesions excised using transanal endoscopic microsurgery. American Society of Colon and Rectal Surgeons Annual Meeting. San Antonio, USA. June 2012 [Poster]; BC Surgical Society Annual Meeting. Whistler, BC, Canada. May 2012. [Podium]

Raval MJ, Heidary B, Kalikias S, Raval D, Phang PT, Brown CJ. Transanal endoscopic microsurgery: outcomes in patients with rectal carcinoma. . American Society of Colon and Rectal Surgeons Annual Meeting. San Antonio, USA. June 2012 [Poster]; Canadian Surgery Forum. London, Ontario, Canada. September 2011. [Podium]; BC Surgical Society Annual Meeting. Whistler, BC, Canada. May 2012. [Podium]

Phang PT, Tiwari T, Lo A, Brown C, Raval MJ.  Quality of life for operative and non-operative management of diverticulitis.  BC Surgical Society Annual Meeting. Whistler, BC, Canada. May 2012 [Podium];Canadian Surgery Forum. London, Ontario, Canada. September 2011. [Poster]

Schornagel I, Raval MJ, Phang PT, Brown CJ. A systematic review and meta-analysis of outcomes after conventional “conical” APR technique compared with “cylindrical” technique.  BC Surgical Society Annual Meeting.  Whistler, BC, Canada. May 2012. [Podium]

Aslani N, Phang PT, Raval MJ, Brown CJ. Influence of surgeon and hospital factors on implementation of laparoscopic colon cancer surgery in British Columbia. Canadian Surgery Forum. London, Ontario, Canada. September 2011. [Poster]; BC Surgical Society Annual Meeting. Whistler, BC, Canada. May 2012. [Podium]

Recsky M, Phang PT, Raval MJ, Cheung W, Brown CJ. Canadian guidelines for the follow-up of postoperative stage II and stage III colorectal cancer patients. Canadian Surgery Forum. London, Ontario, Canada. September 2011. [Poster]

Brown CJ, Kalikias S, Heidary B, Raval D, Phang PT, Raval MJ. Retrospective comparison of early complications in open v. suture closure rectal lesions excised using transanal endoscopic microsurgery. Canadian Surgery Forum. London, Ontario, Canada. September 2011. [Poster]

Dodi G, Jongen J, de la Portilla F, Raval MJ, Altomare DF, Lehur P-A. A multi center study to evaluate efficacy and safety of NASHA/Dx gel for the treatment of fecal incontinence. European Society of Coloproctology Annual Meeting. Sorrento, Italy. September 2010. [Poster]

Aslani N, Heidary B, Lobo Prabhu K, Phang PT, Raval MJ, Brown CJ. Utilization patterns and patient outcomes of laparoscopic colon cancer resection: A population-based study of the BC experience. Canadian Surgery Forum. Quebec City, Quebec. September 2010.  [Podium]

Gupta S, Tarabonta C, Gill S, Raval MJ, Brown CJ. Redefining quality: Synoptic template for rectal cancer operative reporting. British Columbia Surgical Society Annual Meeting.  Kelowna, BC, Canada. May 2010.

Kalke RJ, Brown CJ, Brown JA, Clement JJ, Phang PT, Raval MJ. Angioembolization for acute lower gastrointestinal bleeding: A systematic review of the literature. Radiological Society of North America Annual Meeting. Chicago, USA. December 2009. .[Podium]

Raval MJ, Phang PT, Brown CJ. Submucosal anal canal injection of Solesta bulking agent for fecal incontinence – Results in 12 patients. Canadian Surgery Forum. Victoria, Canada. September 2009. [Poster]

Planting A, Raval MJ, Phang PT, Brown CJ. Transanal endoscopic microsurgery – Impact on fecal incontinence and quality of life. Canadian Surgery Forum. Victoria, Canada. September 2009. [Poster]

Pao JS, Woods R, Raval MJ, Phang PT, Brown CJ. A population-based study of trends and outcomes in patients with rectal cancer treated with abdominoperineal resection in British Columbia between 2000 and 2006. Canadian Surgery Forum. Victoria, Canada. September 2009. [Podium]

Phang PT, McGahan CE, McGregor G, MacFarlane JK, Brown CJ, Raval MJ, Cheifetz R, Kennecke H, Hay JH. Outcomes improved after total mesorectral excision (TME) workshops in British Columbia. American Society of Colon and Rectal Surgeons Annual Meeting and Tripartite Meeting. Boston, USA. June 2008. [Poster]

Brown CJ, Raval MJ, Phang PT. Transanal endoscopic microsurgery for rectal tumours. British Columbia Surgical Society Annual Meeting.  Kamloops, BC, Canada. March 2008. [Podium]

Krajewski S, Brown J, Phang PT, Raval MJ, Brown CJ. The impact of computed tomography scanning of the abdomen on clinical outcomes in patients with acute right lower quadrant pain – A systematic review of the literature. University of British Columbia Surgical Resident Research Day. Vancouver, Canada. April 2007. [Podium]

Karmali S, Wallace L, Raval MJ, Martin GR, Maclean AR, Buie WD, Sigalet DL. Effect of ischemia on intestinal anastomotic healing: The role of hypoxia induced angiogenesis. The Society for Surgery of the Alimentary Tract Annual Meeting. Chicago, USA. May 2005. [Poster]

Raval MJ, Bass S, May GR, Heine JA. Metallic stent endoprosthesis in large bowel obstruction: A retrospective review with followup. American Society of Colon and Rectal Surgeons Annual Meeting. New Orleans, USA. June 2003. [Poster]

Raval MJ, Buie WD, Sigalet DL. The effect of systemic hypoxia on colon anastomotic healing: An animal model. American Society of Colon and Rectal Surgeons Annual Meeting. New Orleans, USA. June 2003. [Podium]

Raval MJ, Bass S, May GR, Heine JA. Metallic stent endoprosthesis in large bowel obstruction: A retrospective review with followup. Canadian Surgery Forum. London, Ontario, Canada. September 2002. [Podium]

Raval MJ, Buie WD, Johnson DRE, Heine JA. Diamond flap anoplasty for chronic anal fissure. Alberta Association of General Surgeons Meeting. Banff, Alberta, Canada. February 2002. [Podium]

Raval MJ, Buie WD, Johnson DRE, Heine JA. Diamond flap anoplasty for chronic anal fissure. Canadian Surgery Forum. Quebec City, Quebec, Canada. September 2001. [Podium]

Raval MJ. A randomized, placebo-controlled trial of Cisapride in postoperative ileus following colonic resection: A study proposal. University of Calgary Surgeon’s Research Day. May 2000. [Podium]

Raval MJ. 5-ASA in preventing recurrence of crohn's disease after surgery: A structured review. University of Calgary Surgeon’s Research Day. May 1999. [Podium]



Invited Presentations

Treatment of hemorrhoids and anal fissures. . St. Paul’s Hospital CME Conference for Primary Care Physicians. Vancouver, Canada. November 2013.

IBD expert exchange: The role of the surgeon in multidisciplinary team management of IBD (plenary session, panels, workshops). Calgary, Canada. March 2013.

Surgical management of colorectal cancer. UBC GI Fellows Rounds. March 2013.

Colorectal surgery for perioperative nurses. Providence Health Care Perioperative Course. January 2013.

General surgery for interns. Royal College PGY1 Residents at St. Paul’s Hospital. March & November 2010, October 2011, October 2012, March 2013.

Achieving length for intestinal anastomoses. Canadian Surgery Forum. Calgary, Canada. September 2012.

Pelvic pouch for inflammatory bowel disease. BC Children’s Hospital Surgical Grand Rounds. June 2011.

Surgical considerations for colorectal cancer. BC Cancer Agency Colorectal Cancer Forum for Patients. March 2011.

Colorectal surgical tumour group update. BC Cancer Agency Gastrointestinal Tumour Group Retreat. Vancouver, Canada. February 2011.

Anal and rectal Disease. UBC Family Practice Residency Program Rounds. June 2010.

Colorectal surgery for nurses. Surgical Inpatient Unit Inservice. May 2010.

Surgical management of IBD. UBC GI Fellows Rounds. April 2010.

Solesta injection for fecal incontinence. UBC Pelvic Floor Surgery Group Rounds. October 2009.

Combined modality treatment of early rectal cancer with transanal endoscopic microsurgery and external beam radiotherapy. BC Cancer Agency Gastrointestinal Tumour Group Retreat. Victoria, Canada. Sept 2009.

Non-cancerous perianal and rectal disease. Providence Health Care Family and Community Medicine CME Rounds. May 2009.

Current state of treatment of fecal incontinence. UBC General Surgery Update. Vancouver, Canada. December 2008.

Hemorrhoid therapy update. St. Paul’s Hospital CME Conference for Family Physicians. Vancouver, Canada. November 2008.

Transanal excision of rectal tumours and outcomes. BC Cancer Agency Surgical Oncology Network Rectal Cancer Update. October 2008.

Controversies in rectal cancer management (panel discussant). BC Cancer Agency Surgical Oncology Network Rectal Cancer Update. October 2008.

Milestones in rectal cancer treatment. St. Paul’s Hospital Department of Surgery Grand Rounds. Vancouver, Canada. October 2008.

Principles of clinical epidemiology for surgeons seminar series. University of British Columbia Surgical Residency Training Programs. May 2008.

Techniques for laparoscopic left hemicolectomy. University of British Columbia Laparoscopic Colorectal Surgery Course. October 2007.

Cadaver lab instruction. University of British Columbia Laparoscopic Colorectal Surgery Course. October 2006 and 2007.

Endometriosis and the general surgeon. Canadian Surgery Forum. Toronto, Canada. September 2007.

The use of adhesion barriers in general surgery. St. Paul’s Hospital General Surgery Rounds. May 2006.

The role of Seprafilm in colorectal surgery. University of Toronto Colorectal Surgery Grand Rounds. October 2004.

The effect of systemic hypoxia on colon anastomotic healing: An animal model. Canadian Surgery Forum, Resident Research Forum.  London, Ontario, Canada.  September 2002.