CRP and proctitis: In patients with UC, the number of patients with proctitis (E1), left-sided (E2), pancolitis (E3), and post-colectomy were 128, 264, 754, and 22, respectively; median partial Mayo score was 0 (0–9); median MES was 1(0–3); mean serum CRP level was 2.2 ± 6.1 mg/L, and 107 (13.5%) and 445 (35.8%) patients were treated with steroids and advanced therapies, respectively.