Lower esophageal lump, can someone give some advice on what it could be?

[DonTN]

While I was staying in China, I developed some stomach problems such as trapped gas and stomach pain that would come and go at various times over a few years. I finally had a Gastric Endoscope done and it showed a good sized lump in the lower esophagus and an ulcer in the bottom of my stomach. Since I don't speak Chinese and my GF's English was poor, I didn't get a good explanation; I was supposed to go back in 6 months for another scope. I have a picture of the test report which shows the problems pretty well but I can't post it here. I believe the ulcer is from the trapped gas from lump growing larger from time to time then shrinking again. That's exactly what it feels like to me. Any insight? I don't have insurance and can't afford to visit the Dr. yet.

Thanks for any help!