Patients with PSC persistence had higher BAL levels of IL-7 (0.70 [0.4–1.71] vs. 0.39 [0.34–0.56] pg/mL, p = 0.030) and IL-8 (62.5 [16–243] vs. 10.9 [3.44–32] pg/mL, p = 0.002), but lower BAL levels of IL-10 (2.58 [0.97–7.77] vs. 6.62 [1.79–11.3] pg/mL, p = 0.034) compared to the controls. The gene discussed is IL10; the disease is pancreatic serous cystadenoma.