Answer: Enterobius vermicularis (pinworm) Shown here are cross-sections of adult pinworms surrounded by neutrophilic inflammation in the wall of the colon. This is an unusual, but well-documented manifestation of pinworm infection. Typically, the adult worms do not penetrate the intestinal wall; the males pass out with the feces after maturation, while the females remain in [...]
Fourteen years ago, I was proudly standing by my resident physician research poster at the annual USCAP meeting. It was the usual “brown stain tricks” poster that was the investigative standard of the day, but with enough rational experimental design and statistically significant results to attract some attention that year and even garner an award. [...]
Back from an excellent CAP meeting that was held in Washington, DC. It was a bit of a homecoming for me – returning to DC for the first time in nearly 5 years after living and practicing there for almost 10. As much as fan of tele-everything and distance communication as anyone, there is still [...]
Here is an unusual case for you. The following objects were seen in a bowel resection:
Answer: Naegleria fowlerii trophozoites Congratulations to all who got this correct! The key to the identification is recognizing the small nuclei with large karyosomes in the trophozoites. Note also the classic bubbly cytoplasm. These are characteristic features of the free-living amoebae.
The Virtual Autopsy Table (developed by Norrköping Visualization Centre and the Center for Medical Image Science and Visualization in Sweden) makes use of high resolution CT And MRI. The images are rendered and processed into 3D models which can be manipulated using a the table’s multi-touch interface. From the website: The technique used in this [...]
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