The patient is a young woman with watery diarrhea. The following organisms were seen in stool concentrate. Identification?
Wednesday, October 5, 2016
Case of the Week 416
This week's case was generously donated by Mr. Boren Huot, and is in honor of George from Memorial Sloan Kettering Cancer Center, who just showed me a very striking example of a similar case.
The patient is a young woman with watery diarrhea. The following organisms were seen in stool concentrate. Identification?
The patient is a young woman with watery diarrhea. The following organisms were seen in stool concentrate. Identification?
The larvae are morphologically consistent with L3 filariform larvae of Strongyloides stercoralis in auto-infection cases. The notched tail in picture 1, the proportion of the buccal esophageal length ratio to the instestine appear to be of equal length and the presence of a genital primordium all points to S. stercoralis filariforms larvae.
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Looks like a gravid adult free-living female S. stercoralis containing developing L1 rhabditiform larvae. Such a neat case! -Jerry
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ReplyDeleteRhabditiform larvae of Strongyloides stercoralis inside adult.
ReplyDeleteOn second examination, the pictures 1,3,4,5 support the fact that the filariform stage of Strongyloides stercoralis is an oviviviparous worm and this explains the fact that most most specimens we examined show rhabditiform larvae rather than eggs.
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