This week's very cool case was donated by Dr. Mike Feely. We haven't had anything like this one before on the blog!
The specimen below was submitted by a young woman who found this "worm" by her arm, right below her mouth, upon waking from a nap. She reported having abdominal pain with associated diarrhea for several weeks prior to presentation, but was otherwise healthy.
Histologic sections (H&E):
Identification? Any additional information that you would like?