MUC16 and liver dysplastic nodule: D/Pcr, Kt/V, Ccr and CA125 are closely related to peritoneal transport function, and Kt/V, D/Pcr and Ccr are relevant indicators to measure the adequacy of peritoneal dialysis, which can indirectly reflect the peritoneal transport function of patients undergoing peritoneal dialysis.19 CA125 is a glycoprotein antigen, which can reflect peritoneal transformation and the number of mesothelial cells, and is often used to measure the peritoneal transport function of patients with DN undergoing peritoneal dialysis.20