use OBI terms for diagostic process, diagnosis + check definitions

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performing a diagnosis: The interpretation of the information available about 
bodily features (clinical picture) of a patient resulting in a diagnosis
http://purl.obolibrary.org/obo/OBI_0000988 

diagnosis textual entity: diagnosis is an assessment of a disease or injury, 
its likely prognosis and treatment.
http://purl.obolibrary.org/obo/OBI_0000075

diagnosis: The representation of a conclusion of a diagnostic process.
http://purl.obolibrary.org/obo/OGMS_0000073

diagnostic process: An interpretive process that has as input a clinical 
picture of a given patient and as output an assertion (diagnostic statement) to 
the effect that the patient has a disease of such and such a type.
http://purl.obolibrary.org/obo/OGMS_0000104

I believe that the OBI and OGMS terms for diagnostic process/performing a 
diagnosis coincide and the action should be to import the OBI term, which 
pre-exists.  

I don't believe the primary term for the OGMS diagnosis terms should be 
diagnosis, which is ambiguous, in english, wrt to the process/result. OTOH 
perhaps OGMS diagnosis is more general in that the OBI term, which denotes 
diagnoses which are textual entities. If the OGMS term intends to be more 
general then it would be good to have an example of usage that demonstrates 
that. 

The diagnostic process terms are "data transformations" in OBI, i.e. data in 
and data out. This means that they do not have as instances, e.g., the sum of: 
"taking blood", "performing a lab test", "interpreting the result". There 
should probably be such a term in OGMS.

Original issue reported on code.google.com by alanruttenberg@gmail.com on 20 Sep 2011 at 6:20

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Oh, and diagnostic processes can result in diagnosis of injury or lack of 
disease.

Original comment by alanruttenberg@gmail.com on 20 Sep 2011 at 6:22

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OGMS defines 'diagnosis' as: "The representation of a conclusion of a 
diagnostic process."
I think this definition is good.

OGMS defines 'diagnostic process' as: "An interpretive process that has as 
input a clinical picture of a given patient and as output an assertion 
(diagnostic statement) to the effect that the patient has a disease of such and 
such a type."

This is problematic because, as Alan Ruttenberg pointed out, diagnoses do not 
always have to be about diseases.  For example, a diagnostic process could 
conclude with a statement to the effect that the patient is healthy or at least 
does not have a particular disease.  There can also be a diagnosis of a 
disorder or of a syndrome.  Thus, the definition of ‘diagnostic process’ 
needs to be changed so that it does not restrict its output to being an 
assertion that the patient has a disease of such and such type.

On a related note, perhaps OGMS should add classes for 'diagnosis of a 
disease', 'diagnosis of a disorder', and 'diagnosis of a syndrome' as 
subclasses of 'diagnosis'.  These subclasses will allow the inclusion of 
is_about relations between the specific type of diagnosis and 
diseases/disorders/syndromes.

Original comment by Alexande...@gmail.com on 13 Jun 2012 at 6:18

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Modified definition of 'diagnostic process' to allow the diagnostic statement 
(output) to be about a disease, disorder, or syndrome, or that a patient has 
none of these. Will leave open the issue for discussion of whether new subtypes 
of 'diagnosis' are needed in OGMS or not.

Original comment by albertgo...@gmail.com on 19 Jun 2012 at 1:19

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I am confused about the difference between diagnosis and clinical finding. 

If the physician observes a patient, and reports "respiratory distress" - is 
that a clinical finding (the physician saw that the patient had trouble 
breathing) or is that a diagnosis (the physician saw that the patient was 
cyanosed and grunted and inferred the respiratory distress based on those 
signs)?

It seems that in some cases the distinction between both is not very clear: is 
broken leg a clinical finding or a diagnosis based on the odd shape of the leg, 
etc...?

Original comment by mcour...@gmail.com on 9 Aug 2012 at 5:51