I Have Seen A Doctor, He Sent Me To A

i have seen a doctor, he sent me to a doctor at our local hospital, he put a camara up my nostril and down my throat, he said it looks like cancer or something else which I carnt remember the name, iv had a cat scan and then a mri scan, he said I need to have an operation at the hospital to have a closer look? im now waiting for a date for the operation, will he no from what he has seen that's its cancer or not? thankyou