Monday, June 14, 2010

Case of the Week 119

The following were seen on a Giemsa-stained thick blood film made from EDTA whole blood. Identification?

Which forms are present?


Anonymous said...


Alasdair said...

T. cruzi.

The bottom panel is classic with the kinetoplast located at the head of the cell.

The others are difficult - is the EDTA causing the trypanomastigotes to curl up? They don't look like pseudocysts.

Anonymous said...

The last is a classic T. cruzi; I would've guessed Leishmania for the others too, though you wouldn't see extracellular amastigotes in the blood very often if ever. Even the stumpy forms of T. brucei are usually more elongated.