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. 2019 Oct 22;7(11):E1410–E1418. doi: 10.1055/a-0966-8494

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Fig. 4 — Improvement of biliary strictures in patients with biliary stricture associated with IgG4-related pancreatobiliary disease after steroid therapy. a Location for diameter measurements of the bile duct at the biliary stricture and distal side of the bile duct that appeared normal on cholangiography. b Comparison of the ratio of bile duct diameters before and at 4 ± 2 weeks after starting steroid remission induction therapy. In all patients, improvements in biliary strictures were observed. The ratio of the diameter of the bile duct after steroid therapy was significantly improved over that before therapy (median ratio: 0.67 vs. 0.18, P < 0.0001).