[Histonet] Re: Exhaust Block
Cindy Dubois (Stockton CA) and Douglas D. Deltour (at the US naval hospital in Sigonella, Italy) comment on a pathologist's practice of having a block destroyed by cutting it down, in order to keep anyone else from doing additional studies on it.
I've never heard of such a practice, in a great number of pathology laboratories. It's irresponsible patient care, and, far from being a CYA, leaves the pathologist open to litigation, simply because it isn't anybody's standard of care.
I frequently have a lot of difficulty - when I'm new on a pathology service - in communicating to histotechnologists just what I want them to do to a block. Usually I go get the paraffin block myself, to look at it and see whether it's already been exhausted, or whether it's been inadequately cut into. Sometimes I want a block cut with minimal trimming - say if I'm looking at a small focus of cancer in a prostate biopsy specimen - and sometimes I want it exhausted, say if I'm looking for a cervical dysplasia that probably isn't there. Requests like "please recut without trimming" or "please cut through the block x3 or more" often aren't understood. In particular, many histotechnologists are reluctant to exhaust a block, even when the pathologist specifically requests it.
There is no reason to send an obviously exhausted block to a consultant. The pathologist's covering letter (he DOES write a covering letter, doesn't she?) should state that the block has been exhausted.
[I apologize for sending this letter HTML formatted - the present version of AOL's mail client requires it. I look forward to the coming update of this listserv that will strip HTML from posts.]
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