This is cyst week! If such a thing can exist.
A 50 year old man who spent 4 weeks in rural India, returning about 12 weeks ago presents with one week of acute onset fever (39.0 C) and RUQ abdominal pain. His only other medical condition is severe COPD requiring chronic steroid use. On review of systems, he denies diarrhea. On exam, you do not note jaundice but there is hepatomegaly and point tenderness over the liver. Labs show a leukocytosis without eosinophilia, elevated alkaline phosphatase, and elevated hepatic transaminases.
Here is a CXR:Given those findings, you order an abdominal CT. Here's one slice:
The microbiologist says, "Aha!" He pulls out the textbook you used for first and second year of medical school and shows you this image:
That's the cyst!
Challenge: Now, if you were going to do a needle aspiration of this lesion, there is a "classic description" of the color and quality of the aspirate. What is it?
First two images shown under Fair Use. Third image is in the public domain.