Tom is a 47 year old male who presents with gradual onset of dyspnea on exertion and fatigue. He also complains of frequent dyspepsia with nausea and occasional epigastric pain. So far you only know that he has a history of alcohol abuse.

What questions would you like to ask this patient about his symptoms?

List a possible diagnosis, then  list 3 other possible differential diagnoses. Back up your answers with 3-5 scholarly articles and EBP and cite the your work.