Primary biliary cirrhosis (PBC) is a chronic cholestatic liver disease that usually affects middle-aged women. The cause of PBC remains unknown, although genetic and immunologic factors appear to play a role. Many patients are asymptomatic at the time of diagnosis. The symptoms and signs of cholestasis develop as the disease progresses. At the physical examination the findings may vary and depend on the stage of the disease. Hypercholesterolemia is present in 50% of the patients and the xanthelasma and xanthomata correlate with it. Xanthelasmas are more common than xanthomata, but this findings are unnusual. Less than 5% of patients will eventually develop xanthomata (xanthomata striatum palmare), and are found on the palms of the hands and soles of the feet, over extensor surfaces of the elbows and knees, in tendons of the ankles and wrists, and on buttocks.
The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years.
© Clarivate Analytics, Journal Citation Reports 2025
SRJ is a prestige metric based on the idea that not all citations are the same. SJR uses a similar algorithm as the Google page rank; it provides a quantitative and qualitative measure of the journal's impact.
See moreSNIP measures contextual citation impact by wighting citations based on the total number of citations in a subject field.
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