Monday, January 1, 2018
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A parasitologist's view of the world
Welcome to Parasite Case of the Week
Every week I will post a new Case, along with the answer to the previous case. Please feel free to write in with your answers, comments, and questions. Also check out my image archive website at http://parasitewonders.com. Enjoy!
The Fine Print:
Please note that all opinions expressed here are mine and not my employer. Information provided is for educational purposes only. It is not intended as and does not substitute for medical advice. I do not accept medical consults from patients.
The Fine Print:
Please note that all opinions expressed here are mine and not my employer. Information provided is for educational purposes only. It is not intended as and does not substitute for medical advice. I do not accept medical consults from patients.
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21 comments:
Giardia
Chilomastix mesnilii trophozoites
This "rotary" motion is a classic for Chilomastix mesnili troph.
The rotary motion is obvious in the first video but not so in the second one.
It is moving too fast , it is chilomastix
Based on the corkscrew motility in the first video, I would also suspect Chilomastix. Is the spiral motility common across the genus? If so, and (based on the video headers and nothing more) the stool is from a cow, the species could be C. caprae.
Mancano le dimensioni! Comunque รจ un Flagellato
Carlo Varlani
Happy New Year everyone, the elongated conical overall shape is compatible with that of Chilomastix mesnili trophozoite. When we further mganify the organism, we can see at times a whipping flagellum.
Florida Fan
Chilomastix mesnili motility is typical and morphology can be seen a little clear in second video
This is Giardia Intestinalis trophozoites
This is Pentatrichomonas hominis trophocyte
My best wishes for 2018 to all of you!
May the upcoming year provide us with lots of exceptional parasites! ;-)
About this case:
Dr. Pritt always sets the headers as “COW#”, even though it is a human sample... so to clarify: this case is from a watery human feces...
The size of the structures is 12-13 um, I’m sorry we forgot to mention this before...
Kind regards!
Idzi
Thank you for clarifying this Idzi. I should note that COW is just my abbreviation for Case of the Week. So there are no bovines involved!
A bit of history: My use of the term "COW" goes back to my days as a pathology resident where I was involved in the Pathology Interest Group (or PIG). We started a pathology COW, and therefore had a very animal-themed organization! I was involved in creating the weekly COW, and carried this into my days as a Clinical Microbiologist when I became the Director of the Clinical Parasitology lab at Mayo Clinic.
I apologize for any confusion! Bobbi
Haha that's fantastic. COW makes total sense now, but of course there had to be a bovine species of Chilomastix to make me outsmart myself.
- Mark Fox
COWs and PIGs...
Wonderful!!!
Thanks for the explanation Dr. Pritt!
:-)
Happy New Year everyone. I have doubts between Chilomastix mesnili and Pentatrichomonas hominis. I can't see clearly enough on my monitor.
Trichomonas hominis
Trichomonas hominis
There isn't a species of Chilomastix pathogenic in cows, for those wondering. And anything that has the species name "caprae" would likely be a from a caprine host meaning a goat.
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