i hope it goes well.
Simon had what looked like cancer on his tongue, he was really poorly and had a biopsy. When he was under it was in 3 different places
my vet said it all seemed to be a surface thing not like normal oral cancer, my cats dont do normal so i still feared the worse! Drugs hadnt helped.
I waited best part of a week and it came back basically as scar tissue
he started eating again and im still non the wiser.
Mouths normally heal quickly, he hasnt, last time i looked the patch was still there so iv no clue what his body is doing
he has had problems with his gums, again prob immune system related.
Treating her problem with drugs can be hit and miss as they dont always respond like they should, i guess your vet wants to rule out the worst which is prob better than using steroids for weeks to no avail