This week's case is from a young man from Africa with fevers. No further travel history is available. The following are images from peripheral blood preparations. Identification?
Unstained blood, Knott's concentration, 10x objective (100x total magnification):
Long time no see. This microfilaria appears sheathed, this narrows the choice to only three: W. Bancroft, Loa Loa and B. malayi. The sheath did not stain pink, the patient did not come from SE Asia nor Polynesia eliminating B.malayi. The column of nuclei extends all the way to the end of the tail and this differentiate the microfilaria from W. bancrofti. We have the last one as the choice: Loa Loa.
Every week I will post a new Case, along with the answer to the previous case. Please feel free to write in with your answers, comments, and questions. Also check out my image archive website at http://parasitewonders.com. Enjoy!
The Fine Print: Please note that all opinions expressed here are mine and not my employer. Information provided is for educational purposes only. It is not intended as and does not substitute for medical advice. I do not accept medical consults from patients.
7 comments:
male ascaris
Long time no see. This microfilaria appears sheathed, this narrows the choice to only three: W. Bancroft, Loa Loa and B. malayi. The sheath did not stain pink, the patient did not come from SE Asia nor Polynesia eliminating B.malayi. The column of nuclei extends all the way to the end of the tail and this differentiate the microfilaria from W. bancrofti. We have the last one as the choice: Loa Loa.
Florida Fan
Yes..loa loa
Yes..loa loa
Low loa by clinical history, region of acquisition, fact that is sheathed like Wuchereria but contains nuclei all way to terminus of tail.
Agree: Loa loa
Post a Comment