Age (p = 0.432), sex (p = 0.872), aetiology (p = 0.898), classification of AP (p = 0.415), location and size of WON (p = 0.543), biochemical parameters (WBC [p = 0.753], and CRP [p = 0.403]), and severity ratings (APACHE II [p = 0.599], Ranson [p = 0.110], and CTSI [p = 0.813]) were similar between the UC-PCD and CUC-PCD groups (Table 1). Here, CRP is linked to alkaline phosphatase measurement.