Creepy Dreadful Wonderful Parasites

This week's case was generously donated by Dr. Rocco LaSala. The specimen was retrieved from the stool of a 70 year-old-woman with appro...

Answer: Not a parasite; plant material. This case was clearly not a parasite (or even animal tissue), as seen on both gross and microscopi...

This week's case is in honor of Father's Day, which was just 2 days ago, as well as Mother's Day, which was in May. The follow...

Answer: Dermacentor sp. ticks: an adult male and female (latter is heavily engorged) and newly-laid eggs. We were very excited to find the...

Welcome to our 400th Parasite Case of the Week! To celebrate the 400th case, I thought I would dedicate this post to education in parasitolo...

Answers: 1. Parasite associated with 'coconut rectum' - Trichuris trichiura. This description refers to a prolapsed rectum on whic...

Wow, we're almost at 400 cases! I will have to think of something extra special for next week. Meanwhile, here is classic finding in a t...

Answer:   Dientamoeba fragilis This organism has an overall structure like an amoeba, but has an internalized flagellum, and is therefore ...

We had a number of great arthropod cases in the past few weeks! Here's one that had us stumped for a little while: The following live ...

Answer:  Fly larvae; most likely representing involvement of the tampon in the environment rather than in the patient. As described by Flo...