"Worms" from a dog
A client brings in a 6-year-old spayed pug-mixed dog and complains that the dog is shedding numerous "worms" from its anus. You examine the dog's perianal area and obtain a white, rice-like "worm" and tease it open with forceps. You examine its contents on a microscope slide. What parasite is this?
Case and photo provided by veterinarian and NCVP resident graduate student Dr. Yoko Nagamori, Oklahoma State University.
These are Dipylidium caninum eggs. The "worms" the client described were actually tapeworm segments (proglottids). This is a very typical presentation for tapeworm infection. Animals acquire Dipylidium caninum through the ingestion of infected fleas containing cysticercoids
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