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
Image of Bobbi Pritt, M.D. Bobbi Pritt, M.D.
Consultant, Clinical Microbiology
Mayo Clinic
Professor of Laboratory Medicine and Pathology
Mayo Clinic College of Medicine and Science
Photo of Charles D. Sturgis, M.D. Charles Sturgis, M.D.
Senior Associate Consultant, Anatomic Pathology
Mayo Clinic

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