Clinical Focus

• Cancer> GI Oncology
• Rectal Cancer
• Colon and Rectal Surgery
• Colorectal Cancer
• Crohn's Disease

Administrative Appointments

• Clinical Director Medical Informatics, Stanford University Hospital and Clinics (2006 - present)

Honors and Awards

• Resident Research Award, University of Minnesota (1998)
• Alpha Omega Alpha, University of Wisconsin (1991)
• Phi Beta Kappa, University of Colorado (1987)

Professional Education

Graduate & Fellowship Program Affiliations

• Surgery

Community and International Work

• Community Medical Advisory Committee 

Current Research Interests

Multimodality treatment of rectal cancer
Sphincter preserving procedures for rectal cancer
Laparoscopic colon and rectal surgery
Surgical education

Clinical Trials

• Perfusion CT as a Predictor of Treatment Response in Patients with Rectal Cancer Recruiting
• Rosuvastatin in Treating Patients With Stage I or Stage II Colon Cancer That Was Removed By Surgery Recruiting
• A Study of an Antibiotic Implant in General Surgical Subjects at Higher Risk for Surgical Wound Infection Completed
• Capecitabine, Oxaliplatin, and Radiation Therapy in Treating Patients Who Are Undergoing Surgery for Stage I Rectal Cancer No longer recruiting
• Assessment of Health Related Quality of Life in Patients Treated for Rectal Cancer Terminated

Publications

• Clinicopathologic and molecular features of sporadic early-onset colorectal adenocarcinoma: an adenocarcinoma with frequent signet ring cell differentiation, rectal and sigmoid involvement, and adverse morphologic features. Chang DT, Pai RK, Rybicki LA, Dimaio MA, Limaye M, Jayachandran P, Koong AC, Kunz PA, Fisher GA, Ford JM, Welton M, Shelton A, Ma L, Arber DA, Pai RK. Mod Pathol. 2012
• Free transverse rectus abdominis myocutaneous flap reconstruction of a massive lumbosacral defect using superior gluteal artery perforator vessels. Gaster RS, Bhatt KA, Shelton AA, Lee GK. Microsurgery. 2012
• Intensity-modulated radiation therapy versus conventional radiation therapy for squamous cell carcinoma of the anal canal. Bazan JG, Hara W, Hsu A, Kunz PA, Ford J, Fisher GA, Welton ML, Shelton A, Kapp DS, Koong AC, Goodman KA, Chang DT. Cancer. 2011; 117 (15): 3342-51
• Single-cell dissection of transcriptional heterogeneity in human colon tumors. Dalerba P, Kalisky T, Sahoo D, Rajendran PS, Rothenberg ME, Leyrat AA, Sim S, Okamoto J, Johnston DM, Qian D, Zabala M, Bueno J, Neff NF, Wang J, Shelton AA, Visser B, Hisamori S, Shimono Y, van de Wetering M, Clevers H, Clarke MF, Quake SR. Nat Biotechnol. 2011; 29 (12): 1120-7
• Fulminant Clostridium difficile colitis in a post-liver transplant patient. Lee M, Shelton AA, Concepcion WL, Bonham CA, Daugherty TJ. Dig Dis Sci. 2010; 55 (9): 2459-62