Although silent reflux is harder to diagnose than GERD, a doctor can diagnose it through a combination of a medical history, physical exam, and one or more tests. Tests may include:
An endoscopic exam, an office procedure that involves viewing the throat and vocal cords with a flexible or rigid viewing instrument
pH monitoring, which involves placing a small catheter through the nose and into the throat and esophagus; here, sensors detect acid, and a small computer worn at the waist records findings during a 24-hour period.
You have been dx by an ENT using the endoscopic exam, however, if surgery should ever come into question I would push for the pH monitoring.
You asked, How long should I expect to be on the Prevacid? Should I consider having an GI work? How longs will it take a for this lump in my throat to disappear?
The answer to this question is different for everyone and is often a matter of patient preference. It often takes a number of months for injury to the throat and voice box to heal once acid has been suppressed. In many cases, increasing the dosage or frequency of the medication for an extended period of time may be necessary for a person to get relief: Many people with LPR require treatment indefinitely to control symptoms. Some people require treatment intermittently. That is, a person may recover completely for months or years and not require medications, then they may have a relapse and recurrence of symptoms.
In severe cases, aggressive, prolonged treatment of the reflux with medications and routine monitoring of the throat is recommended. Further testing to determine whether a patient needs "anti-reflux" surgery (called fundoplication) may also be necessary to restore a new and better stomach valve. Reference:Northeast ENT
Hope this helps you. I am sure you may be hearing from the group of members that will share experiences of treating their LPR using alternative treatments and it is good to look at all the ways that may be helpful for you.
and Heart/Cardiovascular Disease. "She Stood in the Storm & When the Wind Did Not Blow Her Away, She Adjusted Her Sails."