Tuesday, September 18, 2018

Case of the Week 511

This week's case is a centrifuged urine specimen obtained from a child from Sub-Saharan Africa. Many ovoid, elongate, and 'lemon-shaped' objects are seen, ranging in size from 50 to 150 micrometers in length.


What are these objects? Special thanks to Heather Rose, our fabulous parasitology technical specialist, for providing these images.




10 comments:

Anonymous said...

The smaller rhombic shaped objects are crystals possibly uric acid in origin. The large one in the last picture has a terminal caudal spike. There seems to be also a cercaria inside. This makes it compatible with Schistosoma haematobium ova.
Florida Fan

Luis Fernando Solorzano said...

Schistosoma haematobium eggs , it is visible the terminal spine

Idzi P. said...

Uric acid crystals, together with Schistosoma haematobium eggs (in second and third image). In the second image, the Schisto egg is hidden, but the spine and miracidium are visible.
Very nice pictures, demonstrating possible confusion!

Anonymous said...

Thank you Idzi for giving us the correct stage.
Florida Fan

Anonymous said...

Uova di Schistosoma haematobium e cristalli di Acido urico.

Carlo Alberto Varlani

Darin Ali said...

Schistosoma haematobium eggs

Atiya Kausar said...

Clear images with terminal spine and visible miracidium...adding to the geographic location ...centrifuged urine sample..all point Schistosoma haematobium eggs.... 👌Ve Ve clear beautiful pics

Old One said...

I agree with the identification of Schistosoma haematobium eggs. As for the variable yellow lemon shaped structures, I bow to the others for identifying uric acid crystals.

I have had gout for over 50 years. My imagination had me believing urate crystals were shaped like needles and covered with razor sharp hooks. The real thing appears rather benign and quite incapable of causing the extreme pain that they do.

Hopefully the patient has been further tested for gout and treated. I suspect the gout could be causing more misery (although not as damaging to health) than the flukes.

Blaine A. Mathison said...

I don't have much more to add that hasn't already been said: Schistosoma haematobium and uric acid crystals!

William Sears said...

S haematobium egg as well as urine crystals