Fig. 1From: Analysis of risk characteristics for metachronous metastasis in different period of nasopharyngeal carcinomaA Cumulative frequency distribution histogram for metachronous metastatic NPC. The left Y-axis stand for the counts of patients with metastatic NPC at different times. The right Y-axis stand for the cumulative frequency of distant metastases over time. The curve shows the change in the cumulative frequency of distant transitions over time. B Monthly distribution map of distant metastasis in NPC. This graph shows the counts of patients with metastatic NPC every 3 months as a proportion of the total number of patients with metastatic disease. C Annual distant metastasis rate in NPCBack to article page