JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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An Analysis of Prognostic Factors in Patients with Ovarian Malignant Germ Cell Tumors Who Are Treated with Fertility-Preserving Surgery.

BACKGROUND/AIMS: To analyze the clinicopathological factors that affect the prognosis and fertility of patients with malignant ovarian germ cell tumors (MOGCTs).

METHODS: The medical records and follow-up data of 106 patients with MOGCTs who were treated at The Affiliated Tumor Hospital of Guangxi Medical University between January 1986 and December 2010 were enrolled in this study. A Kaplan-Meier analysis was used to analyze the survival curves. The different prognoses among the various clinicopathological factors were evaluated using a univariate analysis and a log-rank test. The multivariate analysis was performed using the Cox proportional hazard regression method. A logistic regression analysis was used to evaluate the influence of different factors on the prognoses and fertility.

RESULTS: The median age at primary treatment was 22 years (range: 9-61years). A total of 59 patients received fertility-preserving surgery, 45 received radical surgery and 94 received postoperative adjuvant chemotherapy. The median follow-up time was 56.5 months (range: 2-309 months). A total of 11 patients experienced a recurrence, and 23 patients died from their cancer. Of the 47 patients who are alive without tumor, 45 have normal menstruation. Of the 39 patients who wished to become pregnant, 31 patients had 33 successful pregnancies that resulted in 33 live births. No statistically significant difference (p > 0.05) was observed with respect to the progression-free survival (PFS; 67.6 vs. 63.3%), the overall survival (OS; 70 vs. 64.1%) and the mortality rate (15.3 vs. 31.3%) between patients who received fertility-preserving surgery and those who received radical surgery. The univariate analysis showed that the pathological types, postoperative residual tumor size, lymph node resection, and omental resection were associated with OS (p < 0.1), whereas postoperative residual tumor size, number of chemotherapy cycles, lymph node resection, and omental resection were associated with PFS (p < 0.1). The multivariate analysis showed that only the postoperative residual tumor size was an independent prognostic factor of OS, whereas the postoperative residual tumor size, number of chemotherapy cycles and lymph node resection were independent prognostic factors of PFS. No statistically significant difference (p > 0.05) was observed with respect to the OS, PFS and fertility between patients who received fertility-preserving surgery and those who were treated with or without comprehensive surgical staging.

CONCLUSION: MOGCTs can achieve a good prognosis after surgery and chemotherapy. Postoperative residual tumor size was an independent prognostic factor of PFS and OS. Moreover, comprehensive surgical staging cannot improve the prognosis. Fertility-preserving surgery plus adjuvant chemotherapy appeared to have little or no effect on prognosis and fertility.

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