[Histonet] veterinary histology

Julio Benavides j.benavides at eae.csic.es
Wed Sep 21 11:56:41 CDT 2016

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



Lauren Sweeney via Histonet <histonet at 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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