Objective: To analyze retrospectively the management of recurrent gestational trophoblastic tumor (GTT) patients and evaluate the recurrence associated risk factors.
Method: 901 gestational trophoblastic tumor (GTT) patients who received treatment at Peking Union Medical College Hospital from January 1985 to January 2004 achieved complete remission (CR). Among them, thirty-one (31/901) relapsed later. Retrospective analyses were carried out on the 31 patients, and multiple regression models were used to identify the risk factors for recurrence.
Results: In all 31 patients, recurrences occurred 6 to 72 months (15.3 months on average) after completing treatment. Of the 25 patients who received treatment again in our hospital, 21 achieved CR, 3 achieved partial remission (PR), and 1 died of progression of disease (PD). Among the 21 CR patients, 4 relapsed repeatedly. The four recurrence associated risk factors identified by multivariate analysis were clinical stage (P<0.05), an interval of more than 12 months between the end of antecedent pregnancy and the start of chemotherapy (odds ratio=3.170, P<0.05), a negative blood beta-hCG titer after seven courses of chemotherapy (odds ratio=4.475, P<0.05), and a less than two courses of consolidation chemotherapy (odds ratio=0.441, P<0.05).
Conclusion: More attention should be given to GTT patients with recurrence associated risk factors. Combination therapy for GTT treatment is effective. In the study, it was demonstrated that certain risk factors were associated with relapse. These factors may need to be integrated into treatment algorithms.
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