I have had two endoscopy and two biopsy for thoat cancer and swallowing problems. I have had this for over 5 years and I am at a stand still. I need to know more about this test he wants me to do and he didn't give me the name of it. You first have a tube to your nose and stomach for a short time, then you wear this tube for 24 hours, was the discription he gave me. I am calling into question all the tests that could help diagnosis me, the less invasive to me the better, as I am batteling other medical problems that are serious at the same time at this problem. I have to have another surgery, and also take my family to court. I am trying to be easy on myself, while still receiving help. I wonder why he ordered or asked me to do this particular test. The name of this test is not on my report. thanks Mrs.D ginnie PS also had throat dialated with no success.