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A parasitologist's view of the world
Welcome to Parasite Case of the Week
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.
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.
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6 comments:
Any chance of straightening one of these buggars out and placing it next to a micrometer?
I've narrowed it down, but am also curious about travel history . . .
Thanks!!!
As the patient is from Africa , i'm going to rule out Brugia (Asia) and Mansonella (New world). It is obviously not Dirofilaria. Onchocerca does not have a sheath whereas these microfilariae do. Loa loa (featured on the blog recently) do have a sheath but this does not show up when stained.
therefore, I am going with Wuchereia bancrofti microfilariae, which would have been contracted from the bite of a mosquito - commonly either an Anopheles, Culex, Mansonia or Aedes. Wuchereia is one of the three filarial worm species that can cause lymphatic filariasis which can lead to the condition known as elephatiasis - see here for some of the devastating symptoms that can be produced:
http://www.google.co.uk/imgres?q=lymphatic+filariasis&um=1&hl=en&sa=N&biw=1920&bih=868&tbm=isch&tbnid=hC3HMHLqXPBsBM:&imgrefurl=http://www.jaskin.com/%253Fp%253D559&docid=12vZqrGSWrjk6M&w=300&h=225&ei=6_Q_To2DHsOw8gOkkInlAg&zoom=1&iact=hc&vpx=1376&vpy=549&dur=1122&hovh=180&hovw=240&tx=128&ty=121&page=1&tbnh=131&tbnw=174&start=0&ndsp=50&ved=1t:429,r:37,s:0
Geography: somewhere in Africa
Wuchereria bancrofti, Loa loa, Mansonella perstans, M. streptocerca, Onchocerca volvulus
Anatomy: blood
W. bancrofti, L. loa, M. perstans
Sheathed:
W. bancrofti, L. loa
Nuclei do not extend to tail tip:
W. bancrofti
I agree with Neuro_Nurse:
Wucheria bancrofti
Microfilariae of Wuchereria bancrofti in Geimsa stain.
Burgia malayi
because
(1)sheathed
(2)nuclei extend upto tail tip
(3)nuclei do not form continuous row; two nuclei at tip tail.
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