Notably, although cases of phlegmonous appendicitis were classified as uncomplicated acute appendicitis (UAA) in earlier studies, and in our study were grouped with complicated acute appendicitis (CAA) according to the 2015 EAES guidelines, the significantly higher leucocyte and C-reactive protein (CRP) levels observed in CAA cases compared to UAA remain unaffected by this reclassification. Here, CRP is linked to appendicitis.