A higher CONUT score was significantly associated with a poorer ECOG PS (p < 0.001), lower BMI (p < 0.001), presence of hydronephrosis (p < 0.001), higher proportion of BSC (p = 0.044), lower hemoglobin (p < 0.001), higher neutrophil count (p = 0.011), higher ALP (p = 0.006), higher CRP (p < 0.001), lower SMI (p = 0.017), as well as lower albumin, lymphocyte count, and total cholesterol (all p < 0.001). Here, CRP is linked to hydronephrosis.