February 2020 — Cytopathology, Clinical Microbiology, Gastroenterology & Infectious Disease

A 65-year-old man with history of treated anal intraepithelial neoplasia presents with new-onset diarrhea. A Papanicolaou-stained anal smear was performed for follow-up cancer screening.

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Photo of Nicholas Boire, M.D., M.Sc. Nicholas Boire, M.D., M.S.
Resident, Anatomic and Clinical Pathology
Mayo Clinic
@DrBoire
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Consultant, Clinical Microbiology
Mayo Clinic
Professor of Laboratory Medicine and Pathology
Mayo Clinic College of Medicine and Science
@ParasiteGal
Photo of Charles D. Sturgis, M.D. Charles Sturgis, M.D.
Senior Associate Consultant, Anatomic Pathology
Mayo Clinic
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