Case Study: Abraham is a 58-year-old man who comes to the clinic complaining of heartburn that has been bothering him for the past 2 months. He describes the pain as a burning sensation in his chest that is worse when he lies down at night. He has tried over-the-counter antacids and histamine blockers, but they have not provided relief. He has also lost 5 pounds over the past 2 months. He denies any nausea, vomiting, dysphagia, or hematemesis. His stools are normal. He has no significant medical history and takes no medications other than over-the-counter antacids and histamine blockers. He has never smoked and drinks alcohol only on occasion. He works as a construction worker
Case Study: Abraham is a 58-year-old man who comes to the clinic complaining of