Saturday, October 1, 2022
HomePediatrics DentistryCreepy Dreadful Wonderful Parasites: Answer to Case 673

Creepy Dreadful Wonderful Parasites: Answer to Case 673

 Answer to the Parasite Case of the Week 673: Paragonimus species; two adult flukes within lung tissue.

You can tell that these are flukes by their loose stroma, thin eosinophilic tegument (outer layer) with prominent spines, and suckers. As noted by Florida Fan, the characteristic eggs (each with a shouldered operculum), along with the location, are helpful in identifying this as a Paragonimus species. Excellent job! 

Sean kindly reminded me that I asked how many “2’s” there were in association with this parasite. Here are some that I had in mind:

  1. Paragonimus adults are commonly found in pairs in the lung – the main reason I chose this case. 
  2. They are hermaphrodites, having male and female reproductive organs (2 different types).
  3. The eggs have a shouldered operculum – 2 ‘bumps’ or shoulders (one on each side of the operculum)
  4. Adult flukes have 2 suckers.

Are there any others you can think of?




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