Figure 2From: Establishment of using serum YKL-40 and SCCA in combination for the diagnosis of patients with esophageal squamous cell carcinoma YKL-40 concentration in serum in the test cohort. Left side, the serum YKL-40 in ESCC patients, benign disease patients, healthy controls and early-stage ESCC patients are plotted as a distribution. P value was calculated using Kruskal-Wallis test. Right side, YKL-40 serum levels in different groups.Back to article page