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Ryan M. Gill, MD, PhD

Research and Clinical Interests

Dr. Ryan Gill is a surgical pathologist at UCSF Medical Center who specializes in the diagnosis and evaluation of adult and pediatric liver disease, liver transplantation, inflammatory bowel disease, and liver and gastrointestinal tract neoplasia and lymphoma. In his research, he focuses on diagnosis, prognosis and treatment options for medical liver disease (in particular NASH), liver transplantation, inflammatory bowel disease, liver/GI neoplasia, and extranodal lymphoma. Dr. Gill received an M.D. and Ph.D. at the University of Kansas in Kansas City, KS. He then completed a combined anatomic and clinical pathology residency, followed by fellowships in hematopathology and liver and gastrointestinal pathology at UCSF. Dr. Gill is a member of several professional organizations, including the Hans Popper Hepatopathology Society, the Rodger C. Haggitt Gastrointestinal Pathology Society, the Pancreatobiliary Pathology Society, and the United States and Canadian Academy of Pathology. Dr. Gill is an elected member of the International Liver Pathology Study Group (ELVES). Dr. Gill has published numerous book chapters and peer-reviewed articles on liver and gastrointestinal pathology and lectures around the world. He is a Professor, and the Director of Surgical Pathology, in the UCSF Department of Pathology.

Selected Publications

  • Joseph NM, Brunt EM, Marginean C, Nalbantoglu I, Snover DC, Thung SN, Yeh MM, Umetsu SE, Ferrell LD, Gill RM. Frequent GNAQ and GNA14 Mutations in Hepatic Small Vessel Neoplasm. Am J Surg Pathol. 2018 Jul 3. doi: 10.1097/PAS.0000000000001110. [Epub ahead of print] PubMed PMID: 29975248.
  • Roberts DE, Kakar S, Mehta N, Gill RM. A Point-based Histologic Scoring System for Hepatocellular Carcinoma Can Stratify Risk of Posttransplant Tumor Recurrence. Am J Surg Pathol. 2018 Jul;42(7):855-865. doi:10.1097/PAS.0000000000001053. PubMed PMID: 29649017.
  • Choi WT, Wen KW, Rabinovitch PS, Huang D, Mattis AN, Gill RM. DNA content analysis of colorectal serrated lesions detects an aneuploid subset of inflammatory bowel disease-associated serrated epithelial change and traditional serrated adenomas. Histopathology. 2018 May 17. doi: 10.1111/his.13652. [Epub ahead of print] PubMed PMID: 29772067.
  • Tsai JH, Ferrell LD, Tan V, Yeh MM, Sarkar M, Gill RM. Aggressive non-alcoholic steatohepatitis following rapid weight loss and/or malnutrition. Mod Pathol. 2017 Jun;30(6):834-842. doi: 10.1038/modpathol.2017.13. Epub 2017 Mar 3. PubMed PMID: 28256569; PubMed Central PMCID: PMC5935795.
  • Choi WT, Jen KY, Wang D, Tavakol M, Roberts JP, Gill RM. Donor Liver Small Droplet Macrovesicular Steatosis is Associated with Increased Risk for Recipient Allograft Rejection. American Journal of Surgical Pathology, 2017, Jan 4. doi: 10 .1097 /PAS. 0000000000000802.

Selected Books/Chapters

  • Gill RM and Kakar S. Chapter 36: Non-Neoplastic Liver Disease (2015), in S.E. Mills. STERNBERG’S DIAGNOSTIC SURGICAL PATHOLOGY, 6th edition, 1663-1703, Wolters Kluwer, Philadelphia, PA.
  • Ferrell LD, Gill RM, and Geisinger KR., Neoplasms and Tumor-Like Conditions of the Liver (2015), in Wick M, Livolsi V, Pfeifer J, Stelow E, Wakely P (eds). SILVERBERG’S PRINCIPLES AND PRACTICE OF SURGICAL PATHOLOGY AND CYTOPATHOLOGY, 5th edition, 2109-2144, Cambridge University Press, Cambridge, UK.
  • Gill RM, Kakar S, Ferrell L. 18. Macrophage infiltrate. (2011) in Ferrell LD and Kakar S. LIVER PATHOLOGY, 1st edition, 265-274, Demos Medical Publishing, New York, NY.
Ryan M. Gill, MD, PhD
  • Director of Surgical Pathology
  • Medical Director, Anatomic Pathology Laboratories, Moffitt-Long Hospital
  • Professor, Department of Pathology
  • Pathology
  • Surgical Pathology

Specialty Area

Surgical Pathology, Liver & GI Pathology, Hematopathology, Placental Pathology

Contact Information

Mailing/Shipping Address:

  • UCSF
  • Ryan M. Gill, MD, PhD
  • Pathology, Box 0102
  • 505 Parnassus Avenue, Room M-590
  • San Francisco, CA 94143

Hospital Affiliation(s)

  • UCSF Medical Center
  • UCSF Benioff Children’s Hospital
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