does any one know what i.s.a stand for i know it a medical contion. please help me to understand it.?

Question

my husband's grandfather was just diginose with it.

Answer 1

I did a quick search for ISA and couldn't find anything. Can you please describe what the disease affects (heart, joints, brain, etc)?. Do you know the whole name for the condition, and not just the initials? You might try variations of the name or initials in this website http://www.stjude.org/glossary
It's a pretty comprehensive glossary of medical terminology and abbreviations.
Hope this helps!