Case of the Week 589

By Bobbi Pritt, M.D. • May 6, 2020

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Happy Monday everyone! It's our first Monday of the Month, and time for our monthly case from Idzi Potters and the Institute of Tropical Medicine, Antwerp.

The following objects were seen in an iron hematoxylin-stained stool preparation from an asymptomatic patient with frequent travels to Asia. The objects measure 10-20 micrometers in greatest dimension.

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 589:

Iodamoeba buetschlii cysts and trophozoites

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.