My mothers cat went in had teeth cleaned & they did a biopsy on something under her tongue(without permission)- no the cat drouls and the tip of her tongue is white. She is having trouble eating her food also. Any idea of what is wrong with her? Vet says cancer but the test was unconclusive. Suggestions......

Hi,
It is difficult to comment on the case without seeing the biopsy report. If the results were truly inconclusive and the cat isn't doing very well (not eating well, seems painful etc.), then further testing may be necessary. If you aren't getting the satisfaction that you need from your current veterinarian, then pursue a second opinion. You may want to inquire about a referral to a specialist if there is one in your area.

Good luck,
drphilvegasvet