I think that a specialist would give his best informed answer from the histology results based on a decent size of tissue. For some reason they would hedge their bets if it were based on and MRI, a CT scan, PET scan, ultrasound or any other type of scan.Some of these scans might show tissue abnormality but only the histology dept could come up with a definitive diagnosis.
I had a fine needle biopsy which showed up fck all and the fcking incompetent registrar told me it was -ve for cancer but failed to fully explain the reasons why.
Probably a branchial cyst he said (to explain the very abnormally swollen lymph gland I had had for the previous 4/5 months.
Registrars! I wouldn't trust them as far as I could spit them. They are only there to save the NHS money!!