Following your procedure, your doctor will have more information about the condition of your upper digestive tract. It is possible that everything is normal, and you may not need any treatment.
If a problem was found during the endoscopy, it may be treated. If it wasn't treated during the endoscopy, then you may need treatment later. Your doctor will discuss these findings with you, as well as tell you what treatment plan may be best for you.
If a biopsy or cytology are taken, the results will usually be back soon after your procedure. Having a biopsy or cytology taken does not mean that you have cancer. Biopsies are often done to look for other problems, like inflammation and polyps.
You and your doctor can talk about the expected results in your particular situation. It is important that your expectations match your doctor's expectations.