Monday, January 13, 2020

Case of the Week 576

Happy New Year! Our first case of 2020 was provided by Heather Arguello, my awesome Parasitology Technical Specialist. The following worm was found in a specimen obtained during colonoscopy. It measured approximately 2 mm long. Identification?

Sunday, January 12, 2020

Answer to Case 576

Answer to Parasite Case of the Week 576: Enterobius vermicularis (a.k.a., pinworm), adult male

Thanks to all who wrote in with the correct answer. Florida Fan noted the presence of several identifying features: cephalic alae confirming the identity of pinworm in this adult nematode, and the curved tail with visible copulatory spicule defining the gender as male.

Meanwhile, Idzi reminded us that Enterobius vermicularis was formerly known as Oxyuris vermicularis. This is why you will sometimes see the infection referred to as oxyuriasis. Finally, Marc shared that he knew the answer but couldn't seem to "pin" it down 😉.