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?

3 comments:

  1. 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.

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  2. 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.

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