Michael S. Torbenson

Michael S. Torbenson, M.D. is a Professor of Laboratory Medicine and Pathology at Mayo Clinic in Rochester, Minnesota. He serves as a Consultant in the Division of Anatomic Pathology within the Department of Laboratory Medicine and Pathology, focusing his expertise on liver and biliary pathologies with over 250 peer-reviewed publications.

Dr. Torbenson's educational background includes:

• MD from University of Chicago (1995)
• BS from University of Minnesota Duluth (1991)
• Fellowship in GI Pathology at The Johns Hopkins Hospital (2001)
• Fellowship in Liver/Transplant at University of Pittsburgh Medical Center (2000)
• Residency in Pathology at University of Pittsburgh Medical Center (1999)

His laboratory pioneered the discovery of CpG islands in the hepatitis B virus genome and demonstrated viral gene regulation through DNA methylation. Dr. Torbenson has authored five books on liver pathology including comprehensive texts on liver biopsy interpretation and liver tumors, and contributed to the WHO Blue Books on gastrointestinal and liver tumors. His research spans molecular characterization of liver tumors, viral hepatitis mechanisms, and clinicopathological correlations essential for precision medicine approaches.

Analysis of Dr. Torbenson's publication record shows consistent contributions to hepatobiliary pathology with increasing emphasis on molecular diagnostics, non-invasive assessment techniques, and translational applications. His work bridges traditional histopathology with genomic and imaging modalities to improve diagnostic accuracy and therapeutic targeting for liver diseases.

Dr. Torbenson has received significant professional recognition:

• President of the Roger C. Haggit Gastrointestinal Pathology Society (2019-2020)
• President of the Hans Popper Hepatopathology Society (2016-2018)
• Member of the United States and Canadian Academy of Pathology (2013-present)
• Active participation in the Gnomes Society (2011-present) and Laennec Society (2007-present)

Dr. Torbenson leads major National Cancer Institute-funded initiatives including the Mayo Clinic Hepatobiliary SPORE project (2018-2025) as Co-PI, and previously directed the Fibrolamellar HCC project and Biospecimen and Pathology Core. His research program maintains extensive tissue biospecimen collections that support multiple collaborative projects investigating hepatobiliary cancer mechanisms and diagnostic markers.

Through his leadership in anatomic pathology, Dr. Torbenson oversees a multidisciplinary research team that integrates histopathological analysis with molecular techniques to advance understanding of liver diseases. His work directly impacts clinical practice through improved diagnostic criteria and classification systems used worldwide.