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RE: Maybe Not Glugea or Pleco
Are all Pathologists from Australia ;}
David
><{{{>-----Original Message-----
><{{{>From: owner-killietalk at aka_org [mailto:owner-killietalk at aka_org]On
><{{{>Behalf Of Bill Phillips
><{{{>Sent: Friday, March 29, 2002 3:30 PM
><{{{>To: killietalk at aka_org
><{{{>Subject: Re: Maybe Not Glugea or Pleco
><{{{>
><{{{>
><{{{>I feel that I must comment on Barry's notes regarding
><{{{>histopathological
><{{{>examination of tissues and the possibility of informed
><{{{>amateurs being able
><{{{>to do such examination and diagnosis.
><{{{>
><{{{>As a human pathologist I could not agree more with what Barry
><{{{>says. One
><{{{>thing that Barry forgot to mention is the preservation of the
><{{{>sample for
><{{{>histopathological examination - if the sample isnt preserved
><{{{>properly, you
><{{{>will face the problem of unrelated post-collection changes.
><{{{>And if you think
><{{{>that an informed amateur should be readily capable of doing
><{{{>it - ask any
><{{{>pathologist as to how many samples collected by professionals
><{{{>in the field
><{{{>are useless because of the lack of proper preparation.
><{{{>
><{{{>And samples for histopathology are best collected from living
><{{{>tissue (or as
><{{{>soon as possible post-mortem). How many hobbyists are willing
><{{{>to sacrifice
><{{{>several fish.
><{{{>
><{{{>Barry also refers to specialised knowledge about examining
><{{{>specimens. I
><{{{>again agree completely. Even in my own area of expertise,
><{{{>sometimes a sample
><{{{>has me scratching my head and asking for a second opinion. On
><{{{>some other
><{{{>areas of human pathology, I can of course say it is such and
><{{{>such but I
><{{{>would be floundering with a total differential diagnosis.
><{{{>
><{{{>With fish, if there is obvious pathology I can say that there
><{{{>is obvious
><{{{>pathology but that is as far as I can go (after 24 years of
><{{{>experience in
><{{{>pathology). To take one example, a few months ago I was shown
><{{{>some slides of
><{{{>fish kidney tissue - I was told that it was kidney tissue and
><{{{>I opened my
><{{{>mouth and concluded that the fish must have been terribly
><{{{>sick (based on
><{{{>human experience). It was normal tissue.
><{{{>
><{{{>An amatuer pathologist friend of mine (he is a science
><{{{>teacher) did a ZN
><{{{>stain on some fish tissue and on microscopic examination
><{{{>found the presence
><{{{>of acid fast rods. Therefore his fish were suffering from
><{{{>Mycobacterium
><{{{>tuberculosis? What are people's thoughts on this as a final
><{{{>differential
><{{{>diagnosis?
><{{{>
><{{{>I think that the best thing to do with fish is to help keep
><{{{>their immune
><{{{>system as intact as possible (you know, all the best
><{{{>fish-keeping practices)
><{{{>and learn how to recognise easily treatable disases. If a
><{{{>fish or tank of
><{{{>fish come down with a "nasty" disease which does not respond
><{{{>readily to
><{{{>readily available medication, it is easiest to destroy the
><{{{>fish and properly
><{{{>sterilise the tank and environment.
><{{{>
><{{{>One final comment - there are wonderful photos in text books of every
><{{{>conceivable disease. Unfortunately diseases have not studied
><{{{>these textbooks
><{{{>and their appearance in real life can take on a vast variety
><{{{>of different
><{{{>forms.
><{{{>
><{{{>
><{{{>Bill Phillips
><{{{>Melbourne
><{{{>Australia
><{{{>
><{{{>---------------
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><{{{>Join the AKA at http://www.aka.org/AKA/Applic.htm
><{{{>
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