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Case of the Week 604

This week's case was generously donated by Dr. Peter Gilligan, and features a histopathology section of an appendix from a patient with Crohn's disease. The pathologist was concerned when they saw the following object in the lumen of the appendix. What's the identification?

Read Dr. Pritt's blog, Parasite Wonders, and submit your answers, comments, and questions. Also, visit her website ParasiteWonders.com, which hosts an archive of classic images from cases Dr. Pritt posted going back to 2007 (in an easy-to-search "A through Z" format) and also offers a flashcard feature.

Answer to Case 604:

Plant material, not a parasite.

Bobbi Pritt, M.D.

Bobbi Pritt, M.D.

Bobbi Pritt, MD, MSc, is a Professor of Laboratory Medicine and Pathology and the Director of the Clinical Parasitology Laboratory at Mayo Clinic in Rochester Minnesota. She is also the Chair of the Division of Clinical Microbiology. Her research interests are in clinical parasitology, vector-borne diseases and the pathology of infectious diseases.