May 2018 — Anatomic Pathology

A 76-year-old man with a history of resected colonic polyps presented for follow-up colonoscopy. He was otherwise asymptomatic and in overall good health. Colonoscopy was unremarkable. The following pictures are haemotoxylin and eosin (H&E)-stained biopsies from the colonic biopsy and immunohistochemistry against Treponema pallidum.

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  Kyriakos Chatzopoulos, M.D.
Resident, Anatomic and Clinical Pathology
Mayo Clinic
  Audrey Schuetz, M.D.
Senior Associate Consultant, Laboratory Genetics and Genomics
Mayo Clinic
Associate Professor of Laboratory Medicine and Pathology
Mayo Clinic College of Medicine
MCL Education (@mmledu)

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