Anterior end:
mid-body with disrupted area:
Closer look at the internal organs:
Posterior end:
Identification? What additional specimen could confirm your diagnosis?
Monday, February 19, 2018
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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!
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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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8 comments:
Loa loa adult female worm.
Adult Loa Loa, female. size, Buccal canal is straight, esophagus is muscular, and the photograph of posterior end showing anus all consistent with loa loa. Eggs shown will eventually produce microfiliariae which could be used for additional diagnostic information. Would expect them to be sheathed, with nuclei extending all the way to tail. The blood should be collected during daytime since there is a diurnal release (that kind of synchronization is amazing but I guess coral polyps do it so why not nematodes...)
Loa loa, and gorgeous pictures!
bw in vt
What a nice case, we do not get to see the adult worm in the USA except the microfilaria form and even these only in the proficiencies. Thank you for such an educational opportunity.
Florida Fan
Loa loa female adult with eggs.... well explained by William Sears.. Additional test definitely will be a blood smear prepared day time 10 am to 2 pm...
Adult female of Loa loa.
Can be confirmed by finding the microfilariae in the patient's blood.
KNOTT concentration yields good sensitivity for this.
Very nice pictures indeed!
I never saw the adult still moving after extraction!
Very cool video material!!!
Clearly everyone recognizes Loa Loa, but I initially - as non-expert- thought of Onchocerca volvulus first. What is the clear differentiating factor to distinguish these two?
Good question Anon! Onchocerca volvulus is only seen in its microfilariae form in the eye, whereas Loa loa is seen in its adult form. The microfilariae of O. volvulus are microscopic and therefore would never been seen with the naked eye like the worm in this case was. Thanks for writing.
Bobbi
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