I got back from my appointment with the hematologist dude a little bit ago. Nothing jumped out at him immediately, but he's going to coordinate with the endocrinologist to make sure they don't order duplicate urine/blood tests.
He doesn't see anything that suggests any type of malignancy or tumor, and the enlarged spleen may or may not mean something. He'll call me by Monday afternoon, after he's spoken with the endo guy and they've mapped out a game plan.
So, in a holding pattern again. When I know the plan, I'll clue y'all in.