Tuesday, February 22, 2022

Case of the Week 673

Welcome to Case of the Week 673, for this interesting day of two's (2/22/22 or 22/2/22, depending on your preferred format). To recognized this day, I've chosen a parasite to go with our theme of two's - histologic section of two parasites in lung tissue. You can click HERE to go to the digital image and view these parasites at higher magnification. Our non-pathologists may find the eggs seen on the digital slide to be quite helpful for making the diagnosis. 

What is your identification of these parasites? Are there any other associated "two's" that you can think of?

5 comments:

Old One said...

Sure do look like a " Pair o Something"

Sean G. Smith said...

indeed Old One... i have not closely scrutinized, but it might be that your words, taken together with those of Horace Greeley may yield our answer!

John Markantonis DO said...

Paragonimus sp.

Anonymous said...

When it comes to worms in the lungs, one genus gets the notoriety: Paragonimus, the lung flukes as there are more than one species involved and depending on the geographic location one species may be more prevalent. From the picture, I believe that the cuticle is spiny, in between the two flukes, the one on the right has a structure suggesting a sucker. The eggs outside the parasites seem to have a flattened end, site of an operculum, some are slightly flattened on one side, not as obvious as in the case of pin worm eggs however it is discernible. Some eggs are slightly brown.
That’s my guess, the ultimate education definitely belongs to Dr. Pritt.
Florida Fan

Anonymous said...

In fact, if we follow the upper left side of the section near the edge, some little distance after the South West bend, we will see an intact egg with its operculum still attached on the raised shoulder of the shell.
Florida Fan