Creepy Dreadful Wonderful Parasites

This week's case was generously donated by Dr. Heidi Lehrke. These objects were seen in a lymph node aspirate specimen. May-Grunwald-G...

Answer: Giardia duodenalis  (a.k.a. G. intestinalis, G. lamblia ) trophozoites This Giemsa-based stain nicely highlights all of the diagno...

This week's case was discovered by the awesome techs in my lab while examining a concentrated wet-preparation from a stool specimen subm...

Answer: Mite, not further identified. It is difficult to identify this mite to the genus level based on the images shown. However, it is c...

This week's case was donated by an internal medicine resident, who passed the object shown below in his stool. He reported intermittent ...

Answer: Tapeworm, probable Taenia species. Unable to confirm due to lack of specimen. Wow, there were a lot of great answers (and debate) ...

We're on a roll with arthropods! This week's case was donated by Dr. Ellen Stromdahl. This arthropod was removed from a patient and ...

Answer: Amblyomma americanum , molting nymph. This is an amazing case because it demonstrates the rarely-seen stage of a nymph molting int...

This week's case is generously donated by Florida Fan, as was just submitted to his lab last month for identification. I love the artist...

Answer:   Ixodes sp. tick Thank you for all of the great responses on this case. As Henry, RastaBob, Eagleville, Lee, and Khalid mentioned...