Case of the Week 45
An inflamed appendix was removed surgically and sent to Surgical Pathology. When it was cut open, approximately 15 of the following objects were found inside the lumen:
An inflamed appendix was removed surgically and sent to Surgical Pathology. When it was cut open, approximately 15 of the following objects were found inside the lumen:
Well, this was definitely a challenging case this week! Many of you wrote in with suggestions that this is some type of fly larvae, and that is certainly a good thought. However, there are no structures such as spines or mouth parts to confirm this identity, and the history would be a bit odd.
Instead, [...]
The following object was found in the diaper of a 1 year old female. The mother noted that it was moving when found. Identification?
Answer: Schistosoma mansoni eggs
This case seemed to generate a lot of enthusiasm from the audience. Thank you all for the great comments! The eggs shown here are classic for S. mansoni, with their large size (>150 microns largest dimension) and classic lateral spine.
Chris C. asked how I thought to do the squash preparation on [...]
The follow are images of an unstained intestinal biopsy that was “squashed” between 2 slides. Please identify the objects present. They measure approximately 180 microns in greatest dimension.
Answer: Dirofilaria immitis; the Dog Heartworm
Congratulations to everyone who wrote in with the correct answer to this case!
Dirofilaria spp. cause both subcutaneous and pulmonary infections in humans, with D. immitis being largely responsible for the pulmonary infections in the U.S. and worldwide. In dogs, the adult worms live in the right side of the [...]
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