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[Strongyloides stercoralis]

Adults and larvae of Strongyloides stercoralis in tissue specimens, stained with hematoxylin and eosin (H&E).

A	B

A: Cross-sections of female S. stercoralis (blue arrows) in small intestine tissue, stained with H&E.  Image taken at 200x magnification.
B: Sections of S. stercoralis from a duodenal biopsy specimen, stained with H&E.  Although strongyloidiasis could not be confirmed based on microscopy alone, this case was confirmed using molecular methods (PCR).  Image taken at 200x magnification.

C	D

C: Higher magnification (1000x oil) of a female of S. stercoralis from the same specimen as Figure A.  Notice the intestine (red arrow) and ovaries (blue arrows).
D: Higher magnification (1000x oil) of a gravid female of S. stercoralis from the same specimen as Figure A.  Notice the intestine (blue arrow), ovary (red arrow) and an egg within the uterus (green arrow).

 

E	F

E: Cross-sections of larvae of S. stercoralis in a intestinal biopsy specimen, stained with H&E.  Image taken at 1000x oil magnification.  The patient was infected with Strongyloides following transplant of an infected kidney.
F: Longitudinal-section of a larva of S. stercoralis from the same specimen as Figure E.  Image taken at 400x magnification.