I went to a consultant about my knee, which hasn't been a problem, to have a firm diagnosis. I got a pretty firm diagnosis. My knees are in pretty good condition, my patella tendons seem fine but I do have either (or both) a meniscal tear or a meniscal cyst.
I'm going for an MRI later this week to get it confirmed and come up with a course of action.
I'm going to lay off the running while I await the results but I'll be in the gym and on the bike over the next few weeks. I want to keep my condition up, so I don't have to face the horror of getting fit from being completely out of shape.