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Variation in cancer antigen 125 (CA125) levels during recurrence and treatment (case 2). At the time of diagnosis, CA125 was 832.7 U/mL (not shown). During 7 years of follow-up, CA125 was monitored every 1–3 months. At the time of the 1st, 2nd, 3rd, and 4th recurrences, CA125 was 56 U/mL, 32 U/mL, 32.9 U/mL, and 23.2 U/mL respectively. Recurrence was diagnosed based on clinical symptoms and imaging by combined positron-emission and computed tomography.
