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Table 1 Baseline characteristics of 111 patients with RPF

From: Association of retroperitoneal fibrosis with malignancy and its outcomes

Baseline characteristics n = 111  
Age at diagnosis of RPF (years) 59.2 ± 15.0  
Mean follow-up duration (years) after RPF diagnosis 9.3 ± 3.6  
Male, n (%) 77 (69.4)  
Retroperitoneal distributions, n (%)   
 Periaortitisa 94 (84.7)  
 Retroperitoneal tumor-like mass 17 (15.3)  
Systemic organ involvement, n (%)   
 Lymph nodes 18 (16.2)  
 Kidney 13 (11.7)  
 Pancreas 9 (8.1)  
 Salivary gland 5 (4.5)  
 Lacrimal gland 1 (0.9)  
Hydronephrosis, n (%) 66 (59.5)  
Creatinine (mg/dL) (n = 100) 2.0 ± 3.1  
ESR (mm/h) (n = 81) 47.6 ± 31.6  
CRP (mg/dL) (n = 90) 2.8 ± 4.4  
IgG (mg/dL) (n = 46) 1522.3 ± 564.2  
IgG4 (mg/dL) (n = 51) 302.7 ± 625.4  
IgG4 > 135 (mg/dL), n (%) 23/51 (45.1)  
  1. Data are expressed as means ± SD for continuous variables or numbers and percentages for categorical variables. RPF retroperitoneal fibrosis; CT computed tomography; PET positron emission tomography; ESR erythrocyte sedimentation rate; CRP C-reactive protein; IgG immunoglobulin G. aFour cases (two cases of descending aorta and one case each of ascending aorta, celiac axis aortitis) were found at the extra-aortic bifurcation