Case #465 – April, 2018

A 74-year-old man, with a prior history of urothelial carcinoma, high grade pT1 (invasive, into lamina propria), was seen at a medical facility for follow-up care. Travel history for the patient was not available. A urinary cytology specimen was examined by a pathologist who observed structures thought to be parasitic in nature. Digital images were captured and sent to the CDC DPDx Team for diagnostic assistance. Figures A and B represent the structures that were observed. What is your diagnosis? Based on what morphologic features.

This case and images were kindly provided by the Hospital Professor Doutor Fernando Fonseca, Amadora, Portugal.

Parasitic image

Figure A

Parasitic image

Figure B

Images presented in the dpdx case studies are from specimens submitted for diagnosis or archiving. On rare occasions, clinical histories given may be partly fictitious.

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