Monday, November 12, 2018

Case of the Week 518

This week's case is a bit of a puzzle for you to put together. The following object was seen in a urine sediment. It was initially moving, but very quickly died. It measures approximately 130 micrometers in length.
Wet prep, 10x objective
 Wet prep, 40x objective

Identification? Images are by one of our Clinical Microbiology fellows, Dr. Sarah Jung.

Monday, November 5, 2018

Case of the Week 517

Case of the Week 513
This week features our monthly case from Idzi Potters and the Institute of Tropical Medicine, Antwerp.

A 45-year-old female patient, suspected of having an infection with Strongyloides stercoralis, provided a stool specimen for Baermann concentration. The following structure was found, measuring about 300 ┬Ám in extended state. Diagnosis please.

Sunday, November 4, 2018

Answer to Case 517

Answer: rotifer

Wow, great comments on this case!  The Old One mentioned that this is a bdelloid rotifer. He comments "In this year of the women, it should be noted that bdelloid rotifers are all female. Able to be successful for millennia while maintaining genetic diversity by taking DNA from other creatures." Fascinating! According to the Encyclopaedia Britannica, "Rotifer, also called wheel animalcule, any of the approximately 2,000 species of microscopic, aquatic invertebrates that constitute the phylum Rotifera. Rotifers are so named because the circular arrangement of moving cilia (tiny hairlike structures) at the front end resembles a rotating wheel." 

There is no clinical significance to this finding. Rotifers are found in environmental water sources, so it is likely that the organism entered the specimen through the collection process - possibly from toilet water contaminated with untreated water.

We've seen a rotifer before on this blog - in Case of the Week 304. Check out the photos from the case contributor, Ahrong Kim in South Korea - they're beautiful!

Friday, November 2, 2018

Halloween Parasite #5

HERE is Halloween Parasite #5, the last in my series of creepy dreadful wonderful parasites for the Halloween season. These pieces are written for the general public, including children, and aim to interest more people in the fascinating world of parasitology.

Thursday, November 1, 2018

Halloween Parasite #4

Happy Halloween Week everyone! As you all know, parasites can be creepy dreadful, but also fascinating, and sometimes even helpful. As a special Halloween treat, I'll be highlighting 5 different parasites on the Mayo Clinic News Network - 1 each day. HERE is parasite #4 - "worms in love" These are written as educational pieces for the general public. Feel free to use the text and images for your own educational purposes.