Hi there,

could be E. coli+virus ("swallen head syndrome") or fowl cholera (P. multocida). I would check the nasal cavity (slice the peak longitudinally) and also the infraorbital sinuses. I am at aloss regarding the ear discharge. Try a coronal slice of the cranium at the ear opening. A sharp knife should be enough to do the cutting. If not, try to decalcified the whole head for a couple of days. Then, decal (if you have not done it previously) the cut tissue before processing.


By the way, if you have any fresh (non fixed) head, to take a sample from the exudate and do some microbiology could be tremendously helpful in these cases.

Hope this helps

Cheers

Julio


Lauren Sweeney via Histonet <histonet@lists.utsouthwestern.edu> escribió:

To all you veterinary histotechs out there:

We got a case submission of a whole 44 week old chicken head and the write up states "swollen head and dirty ear canals". This is the first time we have seen this, even the pathologist is stumped. What part(s) of the head would you gross, and how?

Any feedback welcome!

Thanks!
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