GPT and pancreatic serous cystadenoma: In addition, higher levels of aspartate aminotransferase (75.7 ± 10.9 vs 23.8 ± 1.0 U/L, P < 0.001), alanine aminotransferase (75.9 ± 9.2 vs 21.4 ± 1.3 U/L, P < 0.001), bilirubin (2.4 ± 0.5 vs. 0.5 ± 0.1 mg/dL, P < 0.001) and alkaline phosphatase (229.8 ± 25.3 vs 76.2 ± 3.1 U/L, P < 0.001) were found in PSC patients, as expected.