I know more now
I called and asked my doctor for a copy of the radiologists report in advance of the chest CT scheduled for tomorrow. Turns out I have "slight bilateral fullness of the supraclavicular area" that needs to be checked out to see if it's adenopathy. The report says the area is probably related to body habitus, meaning I'm fat. What I understand is, if it's not adenopathy, it's good. But if it is adenopathy, given the location, it's bad.
Oh, I also have a "slight elevation of the right hemidiaphragm."
Like I said, chest CT is tomorrow, so we'll see what's what, I suppose.