Y Mad N, I Am Ye Uny Button.

The only progress you can make on the pernea fluid is to get a trigrislide level to see if this is cilus, which doesn't really tell you more than just reinforce the idea that there is something obstructive causing lymphadnopathy. But short of just that intellectual exercise, i think it's unlikely that anything, unless you get culture results from your pyrineal fluid showing acid fast bacilli or broad based budding yeast the nokina, no, until apathologist tells you what this case has.