Currently Being ModeratedAug 17, 2013 6:55 PM (in response to A Silverstone)
If you can find one for OpenOffice, that can be installed in OS X and should work for Pages.
Currently Being ModeratedAug 18, 2013 2:48 PM (in response to Tom Gewecke)
Thanks. This link led me to creating a solution. From that link I found a download with a pretty long list of medical terms. I then followed a link on "Dummies" that allowed me to create a custom dictionary.
I actually do not have Pages at the moment, but your recommendation got me to the solution I needed for Word 2011.