Journal
LANCET
Volume 359, Issue 9315, Pages 1403-1404Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S0140-6736(02)08359-9
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Sclerosing pancreatitis is associated with raised concentrations of IgG4. We treated 22 patients with sclerosing pancreatitis, and identified and followed-up three with concomitant hydronephrosis caused by ureteral mass, later diagnosed as retroperitoneal fibrosis. We histologically examined the ureteral and pancreatic lesions of these patients and noted abundant infiltration of IgG4-bearing plasma cells in both tissues. Treatment with corticosteroids lowered serum concentrations of IgG4. IgG4 might also have a pathological role in a systemic fibrosing process that includes pancreatic and retroperitoneal lesions.
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