[Histonet] Re: Processing fatty breast tissue and fatty derm tissue

Anthony Reilly Tony_Reilly <@t> health.qld.gov.au
Tue Mar 11 21:43:15 CDT 2008


Hi Anthony
 
This is a common practice in many laboratories.  The problem that can be encountered is that some modern processors will not allow it as they are not configured for an alcohol station after a xylene.  The times should be no different to any other fatty run which usually have longer times than your routine processing program.
 
regards
 
 
Tony Reilly

Chief Scientist
Anatomical Pathology
Pathology Queensland
Princess Alexandra Hospital
Ipswich Rd, 
Woolloongabba Q 4102
Australia
Ph: 07 32402412
Fax:07 32402930
tony_reilly <@t> health.qld.gov.au


>>> <anthony <@t> histotechexchange.com> 12/03/2008 11:19 am >>>
Dear Ramona:

I am late to the game so I am sorry if you have already had this one.

I have never done this, so please try it on some fatty tissue that you are
going to throw away and secondly I have no idea how it will affect antigen
retrieval or anything involving antibodies.

With that out of the way you may want to try taking the specimen through
alcohols then onto the first clearing agent, then back to alcohol and then
back into the clearing agents and on to wax.
Good luck on finding the times etc.

Can anyone else out there give your opinion on this practice.

Yours truly,

Anthony Williams BSc. HT
Histotech Exchange LLC
19 Whitmore St.
Lexington, VA 24450
T 1 (302) 383 9780
F 1 (540) 463 3583
anthony <@t> histotechexchange.com 




Dear Ramona:

I am late to the game so I am sorry if you have already had this one.

I have neve done this, so please try it on some lipoma that you are going
to throw away and secondly I have no idea how it will affect antigen
retreval or anthing involving antibodies.
> I also would like some advice on processing fatty tissue.  I have tried
> using Pen-Fix prior to processing, but my pathologist complain about an
> artifact and refuse to use it anymore.  Can't explain that one.  I am
> currently processing with formalin x2, 70% x2, 95% x2, 100% x2, clearing
> x2.  I thought the dehydration step should be increased on the fatty
> tissue, but you are saying that is not the problem?  Can someone else
> please offer some experience on this issue.
>
> Ramona Turner, HT (ASCP)
> Potomac Hospital
> Woodbridge, VA
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