Did they ever do test for helicobacter pylori?
Was an esophageal manometry done?
Since an esophagitis was documented by esophagogastroduodenoscopy; the usual protocol is to identify for the H. Pylori. Helicobacter pylori infection may have protective effects on esophageal acid exposure by lowering intragastric acidity or may cause dyspeptic symptoms by chronic gastritis. Lifestyle factors like obesity, alcohol, and smoking, also should be taken in to consideration, which increase intra-abdominal pressure or reduce lower esophageal sphincter tone. However, the relationship of GERD or dyspepsia to H. pylori infection or lifestyle factors has been diverse, so an esophageal pressure studies or manometry is relevant to assess the pressure at lower esophageal sphincter. Your symptoms typically looks like gastroesophageal reflux disease. Read about the GERD;
Another condition one should also consider is esophageal spasms;
Please feel free for your follow up questions.
Your these symptoms can be again part of the conglomerate of esophagitis or GERD. As I mentioned, associated acid peptic disease can occur. Seems to be nothing worrying. These symptoms do get remit on their own (spontaneously).