A 17-year-old comes into the office for a physical examination for football tryouts. He has a family history of diabetes and hypertension. He explains that he has been feeling fatigued and suffered with being overweight majority of his life. Physical examination shows abdominal swelling, enlarged breasts, and palmar erythema on hands. Spleen is palpable. Lab studies show elevated aspartate aminotransferase (AST) and alanine aminotransferase (ALT). ALT concentrations are greater than AST concentration. Which of the following is most likely the diagnosis?