The mass on the left side was solid. More tumor perhaps? Or a mass caused by infection? Rare, but so are Wilms tumors. Not the second spleen, and not a fluid-filled infection. They took a few little samples, and they're sending it to the lab. So...a few days, perhaps, and then we'll know.
The good news is that we don't have to stay overnight at the hospital, most likely. I guess I'm glad for that even though the overnight stay to treat infection would have been a more desirable option.
How scared should we be? Don't know.
The fact is, 90-something percent of kids may survive Wilms tumor, but if you're worried that your kid might not be one of them, those stats don't matter.