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Russell body gastritis (carditis herein) is essentially an incidental finding unrelated to plasma cell disorders. However, if PAS stains are routinely performed, the PAS-positive immunoglobulin in the plasma cells can result in concern for adenocarcinoma.

Case provided by Dr. Elizabeth Montgomery, Clinical Professor, Vice Chair of Faculty Development & Mentoring, Director of Surgical Pathology Fellowship Training Program, Co-Director, Pathology Reference Services, and Editor-In-Chief at Innovative Science Press.

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