Case of the Week 583

By Bobbi Pritt, M.D. • March 11, 2020

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This week's case was donated by Dr. Daniel Cohen. The following specimen was submitted to surgical pathology for examination. No additional history was available. What's the identification? What structures are we seeing here?

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.

Like all specimens in surgical pathology, it was sectioned and made into H&E-stained slides.

Answer to Case 583:

Immature Taenia sp. proglottids

Bobbi Pritt, M.D.

Bobbi Pritt, M.D., is Director of the Clinical Parasitology Laboratory in Mayo Clinic's Department of Laboratory Medicine and Pathology. Her research interests are in clinical parasitology, vector-borne diseases, trainee education, and appropriate test utilization.