PathWays Case Study for June 7

The image below is a duodenal biopsy from a 71-year-old man with chronic diarrhea. Endoscopic examination showed numerous whitish mucosal nodules.


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Taofic Mounajjed, M.D.
Consultant, Division of Anatomic Pathology
Mayo Clinic
Assistant Professor of Laboratory Medicine and Pathology,
Mayo Clinic College of Medicine


April Josselyn

April Josselyn is a Marketing Associate at Mayo Medical Laboratories. She is the editor of Mayo Clinic PathWays and supports corporate communications strategies and internal communications. She has worked at Mayo Clinic since 2012. Outside of work, April enjoys the outdoors and being "hockey mom" for her two sports-crazed boys.


The correct answer is Waldenstrom’s macroglobulinemia.

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