As is too often the case, good news is infrequently reported here; bad news generally hits the front page. Allow me to change that today.
Calle and I came back from the clinic today. She had chest X-rays and an ultrasound today, and everything came back clean - no sign of anything bad. Naturally, there are no guarantees, but for now, things are as good as we could imagine. She's healthy, happy (except for this morning: not keen on fasting or going to the clinic), and just a little lighter (I'm not saying she had a pound or two to lose prior to this stuff ...).
Her next appointment is in the middle of March, just to see how things are going. If that goes well, we'll do another one six months down the road or so. For now, things look good.
One nice thing to all this is that it served as a reminder to me that all cats will eventually die, even mine, and I need to be prepared for that. That may not sound like a "nice" thing, but it's important to understand how life works. Enjoy the time you have with your cats, and when that time is up, remember your cat well.