Monday, May 4, 2020

Case of the Week 589

Happy Monday everyone! It's our first Monday of the Month, and time for our monthly case from Idzi Potters and the Institute of Tropical Medicine, Antwerp.

The following objects were seen in an iron hematoxylin-stained stool preparation from an asymptomatic patient with frequent travels to Asia. The objects measure 10-20 micrometers in greatest dimension.




Identification?

8 comments:

Bernardino Rocha said...

Iodamoeba buetschlii (b├╝tschlii), trophozoites (large karyosome within the nucleus), and cysts (large glycogen vacuole). Keep safe. All the best from Europe.

Sam said...

Iodamoeba buetschlii

Blaine A. Mathison said...

Iodamoeba buetschlii, with Blastocystis sp. along for the ride (or vice versa...)

Unknown said...

that cyst looks like iodamoeba....i've never seen an iodameoba troph so that's as far as i can go. nice catch on the blastocystis blaine

Old One said...

The large glycogen vacuole appears like an impermeable plug or barrier mask for viruses. I wondered how that could be, but then I thought that these Iodameoba were just honoring the rules of their new host, the Mayo Clinic. Not like those boarish Blastocystis.

Anonymous said...

Beautiful case of Iodamoeba butchlii. The large, dense nucleus and the typical glycogen vacuole are all diagnostics. Perhaps the genus was named Iodamoeba because the glycogen vacuole stains brown with iodine. E. nana at times have a glycogen vacuole too, yet its size is smaller measuring usually between six to eight micrometers and the cyst stage typically contains four tiny nuclei.
Florida Fan

Hunlang said...

Iodamoeba butchlii trophozoite and cysts

Unknown said...

Iodamoeba buetschlii trophozoite and cyst