“…An increased prevalence rate for extrahepatic autoimmune disorders has been recognized in association with PSC 59. While IBD is the most common disorder, a number of patients will also develop pancreatitis (10% to 25%),60,61 diabetes mellitus (5% to 15%),59 and autoimmune thyroid disease (3% to 5%) 59,62. Rare associations include Sjogren's syndrome,61 immune thrombocytopenic purpura,63 retroperitoneal fibrosis,64 rheumatoid arthritis,65 Hodgkin's disease,66 glomerulonephritis,67,68 autoimmune hemolytic anemia,69 celiac disease,70–72 and Down's syndrome 73…”