Photo of Charles R. Thomas, Jr., M.D.

Charles R. Thomas Jr., M.D.

    • Professor of Radiation Medicine School of Medicine
    • Chair Radiation Medicine School of Medicine
    • Biomedical Informatics Graduate Program School of Medicine

Charles R. Thomas, Jr., M.D. is Chair of the Department of Radiation Medicine and an active member of the Knight Cancer Institute. He joined the OHSU faculty in November 2005. He received his medical degree from the University of Illinois College of Medicine and is trained in medical oncology and radiation oncology. He has obtained triple-board certification in Radiation Oncology (American Board of Radiology), Medical Oncology and Internal Medicine (American Board of Internal Medicine). He is a member of the National Cancer Institute’s Rectal-Anal Cancer Task Force.

Dr. Thomas is author or co-author of over 240 journal articles and is a co-editor of multiple textbooks including Mediastinal Tumors (Springer-Verlag, 1995), Biliary Tract & Gallbladder Cancers: Diagnosis and Therapy (Demos Medical Publishing, 2008), and Esophagus Cancers: Practice and Principles (Demos Medical Publishing, 2009).

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  • M.D., University of Illinois College of Medicine 1985
  • Residency:

    • Radiation Oncology, University of Washington
    • Internal Medicine, Baylor College of Medicine
  • Fellowship:

    • Medical oncology, Rush University, 1991
  • Certifications:

    • American Board of Radiology/Radiation Oncology
    • American Board of Internal Medicine (Medical Oncology Sub-specialty)

Memberships and associations

  • American Society for Therapeutic Radiology and Oncology
  • American Society of Clinical Oncology
  • Radiological Society of North America
  • Society of Chairmen of Academic Radiation Oncology Programs
  • Southwest Oncology Group
  • American College of Surgeons Oncology Groups


  • "Rheumatologic manifestations of malignancy" Pediatric Blood and Cancer  1990
  • "Assessing patient accrual to cooperative group lung cancer trials" Journal of Thoracic Oncology December 2011
  • "Defining the Role of Adjuvant Therapy" Seminars in Radiation Oncology  2014
  • "Image-guided intensity-modulated radiation therapy for gallbladder carcinoma" Radiotherapy and Oncology October 2006
  • "Racial bias in case presentation" Journal of General Internal Medicine  1990
  • "Lymph Node Harvest During Esophagectomy Is Not Influenced by Use of Neoadjuvant Therapy or Clinical Disease Stage" Journal of Gastrointestinal Surgery April 25 2015
  • "Update on the rheumatologic manifestations of malignancy" Current Cancer Therapy Reviews August 2007
  • "Irreversible egfr inhibitor ekb-569 targets low-let γ-radiation-triggered rel orchestration and potentiates cell death in squamous cell carcinoma" PLoS One December 29 2011
  • "Survey of bereavement practices of cancer care and palliative care physicians in the Pacific Northwest United States" Journal of Oncology Practice September 2012
  • "The efficacy of conventional external beam, three-dimensional conformal, intensity-modulated, particle beam radiation, and brachytherapy for localized prostate cancer." Current Urology Reports May 2005
  • "Participation in clinical trials" Journal of the National Medical Association March 1994
  • "Accuracy of pathologic examination in detection of complete response after chemoradiation for esophageal cancer" American Journal of Surgery May 2007
  • "Current and ongoing progress in the therapy for resectable esophageal cancer" Diseases of the Esophagus September 2005
  • "A research agenda for radiation oncology" International Journal of Radiation Oncology Biology Physics October 1 2012
  • "Disease-specific multidisciplinary care" Diseases of the Esophagus December 2006
  • "Referred otalgia in head and neck cancer" American Journal of Clinical Oncology  2003
  • "ACR Appropriateness Criteria® Resectable Rectal Cancer" Radiation Oncology September 24 2012
  • "Applying complexed prostate-specific antigen to clinical practice [2] (multiple letters)" Urology March 2005
  • "Common emergencies in cancer medicine" Journal of the National Medical Association November 1994
  • "Distribution of the h-index in radiation oncolgy conforms to a variation of power law" Journal of Cancer Education June 2012
  • "Common emergencies in cancer medicine" Journal of the National Medical Association February 1992
  • "Nomogram for predicting the benefit of adjuvant chemoradiotherapy for resected gallbladder cancer" Journal of Clinical Oncology December 10 2011
  • "Stage N2/IIIA non small cell lung cancer" Current Cancer Therapy Reviews May 2007
  • "Colorectal cancer emergencies" Journal of Gastrointestinal Cancer June 2013
  • "Multimodality therapy for locoregional extrahepatic cholangiocarcinoma" Cancer November 15 2009
  • "Surgery versus radiation therapy for patients with aggressive fibromatosis or desmoid tumors" Cancer April 1 2000
  • "A population-based analysis of surgical and adjuvant therapy for resected gastric cancer" Gastrointestinal Cancer Research November 2010
  • "Radiotherapy for esophageal cancer" Journal of Clinical Gastroenterology May 2005
  • "Can Pelvic Radiotherapy Be Omitted in Select Patients With Rectal Cancer?" Seminars in Oncology December 2006
  • "Significant understaging is seen in clinically staged T2N0 esophageal cancer patients undergoing esophagectomy" Diseases of the Esophagus  2015

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