Answer to Case 402

Answer: Not a parasite; plant material.

This case was clearly not a parasite (or even animal tissue), as seen on both gross and microscopic images. The material most closely resembles banana seeds, as seen on a previous case that I've posted.

Unfortunately, this doesn't help elucidate the cause of the patient's symptoms, and therefore additional studies will be necessary.

Thanks again to Rocco for sharing this case with us.