Physician Photo

Gregory Yves Lauwers, MD


Vice Chairman of Pathology

Director of Gastrointestinal Pathology

Dr. Lauwers is an internationally recognized expert in gastrointestinal pathology. He is an invited speaker at all major national and international pathology meetings.

Department of Pathology


  • Cancer Center
  • Gastrointestinal Cancers
  • Digestive Healthcare Center
  • Barrett's Esophagus Treatment Center
Clinical Interests
Gastrointestinal (GI) pathology
Frozen Section Pathology
Boston: Massachusetts General Hospital
Medical Education
MD, Faculte de Medicine Paris VII
Residency, Lenox Hill Hospital
Fellowship, Memorial Sloan Kettering Cancer Center
Board Certifications
Anatomic Pathology, American Board of Pathology
Foreign Languages
Patient Age Group
Accepting New Patients
Accepting New Patients


Dr. Lauwers's research has focused on oncologic surgical pathology of the gastrointestinal tract. Dr. Lauwers has published over 300 peer-reviewed articles, editorials, reviews, and book chapters, and he has been a regular invited speaker at all major national and international pathology meetings. Dr. Lauwers serves on the editorial boards of the American Journal of Surgical Pathology, the American Journal of Clinical Pathology, Modern Pathology, and Hepatogastroenterology, and he is Deputy Editor-in-Chief of the Archives of Pathology and Laboratory Medicine. He is co-author of several textbooks and a co-editor of the 5th edition of Morson and Dawson's Textbook of Gastrointestinal Pathology (2013).


Dr. Lauwers's research focuses on clinicopathologic studies of the gastrointestinal tract and hepatic malignancies. Specific interests include the early diagnosis and biologic behavior of premalignant lesions, particularly in the stomach and esophagus (Barrett esophagus). He is affiliated with the Tucker Gosnell Center for Gastrointestinal Cancers  at the
Massachusetts General Hospital Cancer Center, and the Digestive Healthcare Center.


View my most recent publications at PubMed

  1. Li Y, Chang X, Zhou W, Xiao Y, Nakatsuka LN, Chen J, Lauwers GY. Gastric intestinal metaplasia with basal gland atypia: a morphological and biologic evaluation in a large Chinese cohort. Hum Pathol. 2013 Apr;44(4):578-90.
  2. Liang WY, Zhang WJ, Hsu CJ, Arnason T, Berger D, Hawkins AT, Sylla P, Lauwers GY. Retrospective evaluation of elastic stain in the assessment of serosal invasion of pt3n0 colorectal cancers. Am J Surg Pathol. 2013 Oct:37(10):1565-70.
  3. Kim JY, Kim WG, Jeon TY, Kim GH, Jeong EH, Kim DH, Park do Y,Lauwers GY. Lymph node metastasis in early gastric cancer: evaluation of a novel method for measuring submucosal invasion and development of a nodal predicting index. Hum Pathol. 2013 Dec; 44(12):2829-36.
  4. Ushiku T, Arnason T, Ban S, Hishima T, Shimizu M, Fukayama M,Lauwers GY. Very well differentiated gastric carcinoma mimicking intestinal metaplasia: Analysis of diagnostic criteria. Mod Pathol. 2013 Dec;37(12):1882-8.
  5. Ushiku T, Moran CJ, Lauwers GY. Focally enhanced gastritis in newly diagnosed pediatric inflammatory bowel disease. Am J Surg Pathol 2013 Dec;37(12):1882-8.

Pathology Associates
55 Fruit Street
Boston, MA 02114-2696

Phone: 617-724-0961
Fax: 617-726-0982