The vet who first saw Maddy after we found the first lump just phoned with Maddy’s lab results. Dear little Madeline had an Eosinophilic Granuloma. You can google that if you’re really curious, but the short version is that it’s an unusual auto-immune system reaction often brought on by an insect or spider bite. She may be prone to these in the future, but if we find them early enough they can probably be treated with cortisone.
We are greatly relieved, needless to say.