Tammy,

I would suggest you call your Avian Vet and talk directly to her.
Your vet is the one who saw the cyst/tumor and prescribed the antibiotic and anti-inflammatory to help prevent infection.

All we can do is guess, but I would doubt it was actually a "tumor" as it is almost completely gone.

Be very happy that the medications worked for Baxter -- that's the most important thing!!

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