Posterior pharyngeal wall hypertrophy
Welcome to health care Magic and thanks for putting up the query
The posterior pharyngeal wall hypertrophy is due to post nasal drip
caused by some nasal pathology or due to mouth breathing
You should send me the picture of your throat and get a x-ray paranasal sinuses
The doctor is absolutely right that they don't disappear completely on medicines but correcting the underlying cause treats them.
Continue with nasal spray
once daily and take tablet vitamin c
Follow up with the required information so that I can suggest you better.
Thanks and regards