Call his nurse and ask her what it means. You have a right to all of your medical records and since s/he didn't explain this to you the nurse needs to If the nurse doesn't know the doctor needs to talk to you.
Have you googled it? I'd do that first but still call them instead.
I collected all of my medical records to take to Mayo last year so I read them. I was surprised at some of the things I read. I liked the part where my GI said I was a nice middle aged lady
Did you know they write stuff like that down? What if I was a cranky old battle ax?