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Table 1 Clinical features, laboratory tests, and pancreatic morphology at diagnosis (From Ref. [41])

From: Autoimmune pancreatitis can develop into chronic pancreatitis

  Stone-forming Non-stone-forming P value
group (n = 28) group (n = 32)  
Clinical features Median (range)  
 Observation period§ 100 (36–165) 90 (36–230) 0.524
 Age 67 (47–84) 64.5 (38–81) 0.543
 Sex (M/F) 24/4 22/10 0.140
 Alcohol (+/−) 20/8 19/12 0.582
 Prednisolone (+/−) 25/3 28/4 1.000
 Relapse (+/−) 11/17 6/26 0.093
Laboratory tests   
 Amylase 94 (17–431) 86 (22–478) 0.678
 IgG 2187 (892–7236) 2183 (1194–5545) 0.686
 IgG4 640 (154–2855) 424 (4–2970) 0.916
 C3 91 (33–157) 87 (29–199) 0.538
 C4 20.1 (7.7–39.7) 21.3 (1.1–38.7) 0.627
 sIL2-R 738 (132–2260) 940 (257–4695) 0.130
 CIC 5.1 (1.9–40) 5.5 (1.9–27.5) 0.392
Pancreatic morphology at diagnosis    
Pancreatic swelling (by CT)    
 Head (+/−) 26/2 20/12 0.006*
 Body (+/−) 20/8 19/13 0.419
 Tail (+/−) 17/11 19/13 1.000
 Focal/Segmental-Diffuse 7/21 12/20 0.406
Ductal narrowing in MPD (by ERP)    
 Head (+/−) 24/4 22/10 0.140
  Wirsung + Santorini (+/−) 21/7 13/19 0.010*
 Body (+/−) 15/13 19/13 0.795
 Tail (+/−) 22/6 24/8 0.770
 Focal/Segmental-Diffuse 6/22 11/21 0.390
  1. §Period from AIP diagnosis to the most recent observation (months).
  2. * P < 0.05.
  3. sIL2-R: soluble interleukin 2 receptor, CIC: circulating immune complex,.
  4. MPD: main pancreatic duct.