Skip to Content

William A Ross, MD, MBA

Present Title & Affiliation

Primary Appointment

Professor, Department of Gastroenterology, Hepat,& Nutr, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX

Office Address

The University of Texas MD Anderson Cancer Center
1515 Holcombe Blvd.
Unit Number: 1466
Houston, TX 77030
Phone: 713-794-5073

Education & Training

Degree-Granting Education

1999 Colorado State University, Fort Collins, CO, MBA, Finance
1982 University of California, Irvine, Irvine, CA, MD
1978 University of California, Irvine, Irvine, CA, BS, cum laude Biological Sciences

Postgraduate Training

1995 Fellowship Therapeutic Biliary Endoscopy, Nihon University Medical School, Tokyo, Japan
1985-1987 Fellowship Gastroenterology, Gastroenterology, Baylor College of Medicine, Houston, TX
1984-1985 Clinical Residency, Baylor College of Medicine, Houston, TX
1983-1984 Clinical Residency, Internal Medicine, University of California, Irvine, Irvine, CA
1982-1983 Clinical Internship, Internal Medicine, Baylor College of Medicine, Houston, TX

Board Certifications

1994 Geriatrics, Recertification Date: 2004
1/1989 Gastroenterology
1/1985 Internal Medicine


Academic Appointments

Associate, Digestive and Liver Disease Consultants, Houston, TX, 2001-2002
Sr. Partner, Lake Charles Medical and Surgical Clinic, Lake Charles, LA, 1994-2001
Associate, Fort Bend Gastroenterology, Missouri City, TX, 1992-1993
Partner, Lake Charles Medical and Surgical Clinic, Lake Charles, LA, 1987-1992

Selected Publications

Peer-Reviewed Original Research Articles

1. Krishna SG, Bhattacharya A, Ross WA, Ladha H, Porter K, Bhutani MS, Lee JH. Pretest prediction and diagnosis of metastatic lesions to the pancreas by endoscopic ultrasound-guided fine needle aspiration. J Gastroenterol Hepatol 30(10):1552-60, 10/2015. PMID: 25867963.
2. Krishna SG, Bhattacharya A, Li F, Ross WA, Ladha H, Porter K, Atiq M, Bhutani MS, Lee JH. Diagnostic Differentiation of Pancreatic Neuroendocrine Tumor From Other Neoplastic Solid Pancreatic Lesions During Endoscopic Ultrasound-Guided Fine-Needle Aspiration. Pancreas. e-Pub 9/2015. PMID: 26418912.
3. Raju GS, Lum PJ, Slack RS, Thirumurthi S, Lynch PM, Miller E, Weston BR, Davila ML, Bhutani MS, Shafi MA, Bresalier RS, Dekovich AA, Lee JH, Guha S, Pande M, Blechacz B, Rashid A, Routbort M, Shuttlesworth G, Mishra L, Stroehlein JR, Ross WA. Natural language processing as an alternative to manual reporting of colonoscopy quality metrics. Gastrointest Endosc 82(3):512-9, 9/2015. e-Pub 4/2015. PMCID: PMC4540652.
4. Ghouri YA, Krishna SG, Kundu UR, Bhutani MS, Lee JH, Ross WA. Erratum to: A Case Series and Literature Review of Merkel Cell Carcinoma Metastasizing to Pancreas. Dig Dis Sci 60(7):2211, 7/2015. PMID: 25976625.
5. Bektas M, Krishna SG, Ross WA, Weston B, Katz MH, Fleming JB, Lee JH, Bhutani MS. Prevalence of extra-pancreatic cysts in patients with cystic pancreatic lesions detected by endoscopic ultrasound. Endosc Ultrasound 4(3):219-24, Jul-Sep, 7/2015. PMCID: PMC4568634.
6. Ghouri YA, Krishna SG, Kundu UR, Bhutani MS, Butani MS, Lee JH, Ross WA. A case series and literature review of Merkel cell carcinoma metastasizing to pancreas. Dig Dis Sci 60(6):1805-12, 6/2015. e-Pub 1/2015. PMID: 25586085.
7. Lynch PM, Burke CA, Phillips R, Morris JS, Slack R, Wang X, Liu J, Patterson S, Sinicrope FA, Rodriguez-Bigas MA, Half E, Bulow S, Latchford A, Clark S, Ross WA, Malone B, Hasson H, Richmond E, Hawk E. An international randomised trial of celecoxib versus celecoxib plus difluoromethylornithine in patients with familial adenomatous polyposis. Gut. e-Pub 3/2015. PMID: 25792707.
8. Ross WA, Thirumurthi S, Lynch PM, Rashid A, Pande M, Shafi MA, Lee JH, Raju GS. Detection rates of premalignant polyps during screening colonoscopy: time to revise quality standards? Gastrointest Endosc 81(3):567-74, 3/2015. e-Pub 1/2015. PMCID: PMC4340745.
9. Krishna SG, Li F, Bhattacharya A, Ladha H, Porter K, Singh A, Ross WA, Bhutani MS, Lee JH. Differentiation of pancreatic ductal adenocarcinoma from other neoplastic solid pancreatic lesions: a tertiary oncology center experience. Gastrointest Endosc 81(2):370-9, 2/2015. e-Pub 10/2014. PMID: 25442085.
10. Sudo K, Xiao L, Wadhwa R, Shiozaki H, Elimova E, Taketa T, Blum MA, Lee JH, Bhutani MS, Weston B, Ross WA, Komaki R, Rice DC, Swisher SG, Hofstetter WL, Maru DM, Skinner HD, Ajani JA. Importance of surveillance and success of salvage strategies after definitive chemoradiation in patients with esophageal cancer. J Clin Oncol 32(30):3400-5, 10/2014. e-Pub 9/2014. PMCID: PMC4195852.
11. Krishna SG, Rao BB, Thirumurthi S, Lee JH, Ramireddy S, Guindani M, Ross WA. Safety of endoscopic interventions in patients with thrombocytopenia. Gastrointest Endosc 80(3):425-34, 9/2014. e-Pub 4/2014. PMID: 24721520.
12. Taggart MW, Rashid A, Ross WA, Abraham SC. Oesophageal hyperkeratosis: clinicopathological associations. Histopathology 63(4):463-73, 10/2013. e-Pub 7/2013. PMID: 23879628.
13. Lee JH, Krishna SG, Singh A, Ladha HS, Slack RS, Ramireddy S, Raju GS, Davila M, Ross WA. Comparison of the utility of covered metal stents versus uncovered metal stents in the management of malignant biliary strictures in 749 patients. Gastrointest Endosc 78(2):312-24, 8/2013. e-Pub 4/2013. PMID: 23591331.
14. Wang W, Stroehlein JR, Landon G, Ross WA. Prostate cancer metastatic to the pancreas. J Clin Oncol 31(21):e367-9, 7/2013. e-Pub 6/2013. PMID: 23752113.
15. Wang W, Shpaner A, Krishna SG, Ross WA, Bhutani MS, Tamm EP, Raju GS, Xiao L, Wolff RA, Fleming JB, Lee JH. Use of EUS-FNA in diagnosing pancreatic neoplasm without a definitive mass on CT. Gastrointest Endosc 78(1):73-80, 7/2013. e-Pub 3/2013. PMID: 23523302.
16. Raju GS, Vadyala V, Slack R, Krishna SG, Ross WA, Lynch PM, Bresalier RS, Hawk E, Stroehlein JR. Adenoma detection in patients undergoing a comprehensive colonoscopy screening. Cancer Med 2(3):391-402, 6/2013. e-Pub 4/2013. PMCID: PMC3699850.
17. Suzuki R, Lee JH, Krishna SG, Ramireddy S, Qiao W, Weston B, Ross WA, Bhutani MS. Repeat endoscopic ultrasound-guided fine needle aspiration for solid pancreatic lesions at a tertiary referral center will alter the initial inconclusive result. J Gastrointestin Liver Dis 22(2):183-7, 6/2013. PMID: 23799217.
18. Atiq M, Bhutani MS, Ross WA, Raju GS, Gong Y, Tamm EP, Javle M, Wang X, Lee JH. Role of endoscopic ultrasonography in evaluation of metastatic lesions to the pancreas: a tertiary cancer center experience. Pancreas 42(3):516-23, 4/2013. PMID: 23211369.
19. Buxbaum J, Ross W, Tang SJ, Weston B, Raju GS, Eisen GM. Are clips useful in the prevention of delayed bleeding after endoscopic mucosal resection? Gastrointest Endosc 77(3):491.e2; 491.e4, 3/2013. PMID: 23536930.
20. Lynch PM, Morris JS, Ross WA, Rodriguez-Bigas MA, Posadas J, Khalaf R, Weber DM, Sepeda VO, Levin B, Shureiqi I. Global quantitative assessment of the colorectal polyp burden in familial adenomatous polyposis by using a web-based tool. Gastrointest Endosc 77(3):455-63, 3/2013. e-Pub 1/2013. PMCID: PMC3574220.
21. Buxbaum J, Ross W, Tang SJ, Weston B, Raju GS, Eisen GM. Is there a difference in adenoma recurrence by race-ethnicity? Gastrointest Endosc 77(3):491.e2; 491.e4-5, 3/2013. PMID: 23536931.
22. Buxbaum J, Ross W, Tang SJ, Weston B, Raju GS, Eisen GM. Management for patients with tubular adenoma. Gastrointest Endosc 77(3):491.e1; 491.e3, 3/2013. PMID: 23536928.
23. Buxbaum J, Ross W, Tang SJ, Weston B, Raju GS, Eisen GM. Surveillance colonoscopy in patients with a serrated polyp. Gastrointest Endosc 77(3):491.e1; 491.e3-4, 3/2013. PMID: 23536929.
24. Suzuki R, Singh H, Ramireddy S, Ross WA, Irisawa A, Bhutani MS. Endoscopic ultrasound-guided fine needle aspiration for smooth benign appearing esophageal stricture due to metastatic breast cancer. Endosc Ultrasound 2(1):35-7, 1/2013. PMCID: PMC4062238.
25. Ajani JA, Correa AM, Hofstetter WL, Rice DC, Blum MA, Suzuki A, Taketa T, Welsh J, Lin SH, Lee JH, Bhutani MS, Ross WA, Maru DM, Macapinlac HA, Erasmus J, Komaki R, Mehran RJ, Vaporciyan AA, Swisher SG. Clinical parameters model for predicting pathologic complete response following preoperative chemoradiation in patients with esophageal cancer. Ann Oncol 23(10):2638-42, 10/2012. e-Pub 7/24/2012. PMCID: PMC3457750.
26. Jaganmohan S, Lynch PM, Raju RP, Ross WA, Lee JE, Raju GS, Bhutani MS, Fleming JB, Lee JH. Endoscopic Management of Duodenal Adenomas in Familial Adenomatous Polyposis-A Single-Center Experience. Dig Dis Sci 57(3):732-7, 3/2012. e-Pub 9/30/2011. PMID: 21960285.
27. Atiq M, Bhutani MS, Bektas M, Lee JE, Gong Y, Tamm EP, Shah CP, Ross WA, Yao J, Raju GS, Wang X, Lee JH. EUS-FNA for Pancreatic Neuroendocrine Tumors: A Tertiary Cancer Center Experience. Dig Dis Sci 57(3):791-800, 3/2012. e-Pub 10/1/2011. PMID: 21964743.
28. Ross WA, Alousi AM. Making the diagnosis of gastrointestinal GVHD: is evaluation of the ileum necessary? Bone Marrow Transplant 47(3):321-2, 3/2012. PMID: 22395763.
29. Singal AK, Ross WA, Guturu P, Varadhachary GR, Javle M, Jaganmohan SR, Raju RP, Fleming JB, Raju GS, Kuo YF, Lee JH. Self-Expanding Metal Stents for Biliary Drainage in Patients with Resectable Pancreatic Cancer: Single-Center Experience with 79 Cases. Dig Dis Sci 56(12):3678-84, 12/2011. e-Pub 7/2011. PMID: 21750930.
30. Kim HN, Alousi AM, Lee JH, Qiao W, Xiao L, Ross WA. Role of ERCP in patients after hematopoietic stem cell transplantation. Gastrointest Endosc 74(4):817-24, 10/2011. e-Pub 7/2011. PMID: 21802682.
31. Raju RP, Jaganmohan SR, Ross WA, Davila ML, Javle M, Raju GS, Lee JH. Optimum palliation of inoperable hilar cholangiocarcinoma: comparative assessment of the efficacy of plastic and self-expanding metal stents. Dig Dis Sci 56(5):1557-64, 5/2011. e-Pub 1/2011. PMID: 21222156.
32. Kountourakis P, Correa AM, Hofstetter WL, Lee JH, Bhutani MS, Rice DC, Komaki R, Maru DM, Ross WA, Vaporciyan A, Swisher SG, Ajani JA. Combined modality therapy of cT2N0M0 esophageal cancer: the University of Texas M. D. Anderson Cancer Center experience. Cancer 117(5):925-30, 3/2011. e-Pub 10/2010. PMCID: PMC3080168.
33. Weston BR, Ross WA, Liu J, Lee JH. Clinical outcomes of nitinol and stainless steel uncovered metal stents for malignant biliary strictures: is there a difference? Gastrointest Endosc 72(6):1195-200, 12/2010. PMID: 21111871.
34. Ross WA, Egwim CI, Wallace MJ, Wang M, Madoff DC, Lee JH. Outcomes in Lymphoma Patients with Obstructive Jaundice: A Cancer Center Experience. Dig Dis Sci 55(11):3271-7, 11/2010. e-Pub 7/2010. PMID: 20632106.
35. Shureiqi I, Chen D, Day RS, Zuo X, Hochman FL, Ross WA, Cole RA, Moy O, Morris JS, Xiao L, Newman RA, Yang P, Lippman SM. Profiling Lipoxygenase Metabolism in Specific Steps of Colorectal Tumorigenesis. Cancer Prev Res (Phila Pa). e-Pub 6/2010. PMID: 20570882.
36. Ross, WA. Colorectal cancer screening in evolution: Japan and the USA. J Gastroenterol Hepatol 25(Suppl. 1):S49-S56, 5/2010. PMID: 20586866.
37. Das P, Jiang Y, Lee JH, Bhutani MS, Ross WA, Mansfield PF, Ajani JA. Multimodality approaches to localized gastric cancer. J Natl Compr Canc Netw 8(4):417-25, 4/2010. PMID: 20410334.
38. Weston BR, Iyer RB, Qiao W, Lee JH, Bresalier RS, Ross WA. Ability of integrated positron emission and computed tomography to detect significant colonic pathology: the experience of a tertiary cancer center. Cancer 116(6):1454-61, 3/2010. PMID: 20143447.
39. Ross WA, Wasan SM, Evans DB, Wolff RA, Trapani LV, Staerkel GA, Prindiville T, Lee JH. Combined EUS with FNA and ERCP for the evaluation of patients with obstructive jaundice from presumed pancreatic malignancy. Gastrointest Endosc 68(3):461-6, 4/2008. e-Pub 4/2008. PMID: 18384788.

Invited Articles

1. Ross WA, Lee JH. Endoscopic approach to tracheoesophageal fistulas in adults. Tech Gastrointest Endosc 10(4):155-163, 2008.


1. Ross WA. Small-bowel imaging: multiple paths to the last frontier. Gastrointest Endosc 68(6):1117-21, 12/2008. PMID: 19028219.


1. Petersen BT, Kahaleh M, Kozarek RA, Loren DE, Gupta K, Kowalski TE, Freeman M, Chen YK, Branch MS, Edmundowicz SA, Binmoeller KF, Baron TH, Gluck M, Ayub K, Shah RJ, Kinney TP, Ross WA, Jowell PS. A Multi-Site, Single Arm, Prospective Study of a New Nitinol, Self-Expanding, Biliary Fully-Covered Stent for the Palliative Treatment of Malignant Bile Duct Obstruction. Gastrointestinal Endoscopy 67(5):AB232, 4/2008.
2. Weston BR, Ross WA, Davila ML, Lee JH. Clinical Outcomes and Performance of Nitinol and Stainless Steel Uncovered Metal Stents for Malignant Biliary Strictures. Is There a Difference?. Gastrointestinal Endoscopy 67(5):AB170, 4/2008.
3. Weston BR, Iyer RB, Lee JH, Ross WA. Clinical Significance of Incidental 18F-FDG Uptake in the Colon On PET/CT: Colonoscopic Findings in a Case Control Study. Gastrointestinal Endoscopy 67(5):AB82-AB83, 4/2008.
4. Lee JH, Davila RE, Ross WA, Davila ML. Self-Expandable Metal Stents in the Management of Benign and Malignant Colorectal Obstruction. Gastrointestinal Endoscopy 67(5):AB316-AB317, 4/2008.

Book Chapters

1. Ross WA. Graft vs Host Disease and Immunologic Complications. In: Medical Care of Cancer Patients. Ed(s) SJ Yeung, C Escalante, R Gagel. BC Decker, 278-284, 2009. ISBN: 978-1-55009-312-4.
2. Lee JH, Ross WA. Invasive/Interventional Gastroenterology. In: Medical Care of the Cancer Patients. Ed(s) SJ Yeung, C Escalante, R Gagel. BC Decker, 285-291, 2009. ISBN: 978-1-55009-312-4.

Letters to the Editor

1. Tan D, Ross WA. Colorectal polyps: clinical significance of endoscopic and pathologic correlation. Am J Clin Pathol 129(4):659-60; author reply 660, 4/2008. PMID: 18431859.

Last updated: 7/18/2016