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Impact of Optimal Therapy and Prognostic Factors in Malignant Germ Cell Tumors of Ovary: 20 Years’ Institutional Experience

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Abstract

The objective of this study is to analyze the impact of clinicopathological and treatment-related factors on survival in patients with malignant ovarian germ cell tumor. A total of 253 patients of ovarian germ cell malignancy were retrospectively reviewed during 2000–2019. Out of these, 111 had primary treatment at our institute, which is a dedicated regional cancer center. The remaining 142 were operated elsewhere and were referred to us for adjuvant chemotherapy or with recurrent disease. The clinicopathological and treatment-related characteristics were analyzed for association with tumor persistence/recurrence or death. Among them, 107 were dysgerminomas; 60 had endodermal sinus tumor, 53 mixed germ cell tumors, and 31 immature teratoma; and one each had embryoma and primitive germ cell tumor. The median follow-up period was 19 months (range 0–214). Median time to recurrence or progression was 5 months. Forty-nine patients (19.4%) had a recurrence and there were 16 (6.3%) deaths. Five-year disease-free-survival was 71.3% and 5-year overall survival rate was 88.1%, for the entire cohort. Disease-free-survival was 90.4% and overall survival was 92.1% for patients entirely treated at the reporting institute. Sub-group analysis based on treatment adequacy showed that survival rate was 91.0% in patients who had timely and complete initial treatment versus 78.3% in patients where treatment was incomplete or delayed (p = 0.032). Factors affecting relapse were tumor histology, absence of surgical staging, presence of residual disease, inadequate response to chemotherapy, treatment outside reporting institute, and incomplete/delayed chemotherapy. Significant factors adversely affecting survival were presence of post-operative residual disease, tumor histology, incomplete response to chemotherapy, and inadequate/delayed treatment at primary setting. There was no statistically significant difference based on disease stage and whether fertility-sparing surgery or non-fertility-sparing surgery was performed. Prognosis of ovarian germ cell malignancies is excellent with timely, optimal treatment. The outcome improves significantly if managed adequately in the primary setting, involving dedicated gynecologic oncologists.

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Authors and Affiliations

  1. Department of Gynecologic Oncology, Kidwai Memorial Institute of Oncology, Bengaluru, Karnataka, 560029, India

    V. R. Pallavi, Yamini Kansal, Praveen S. Rathod, K. Shobha, Rajshekar Kundargi, U. D. Bafna & Uma Devi

  2. Department of Biostatistics, Kidwai Memorial Institute of Oncology, Bengaluru, India

    C. R. Vijay

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  1. V. R. Pallavi
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  2. Yamini Kansal
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Correspondence to Yamini Kansal.

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Pallavi, V.R., Kansal, Y., Rathod, P.S. et al. Impact of Optimal Therapy and Prognostic Factors in Malignant Germ Cell Tumors of Ovary: 20 Years’ Institutional Experience. Indian J Surg Oncol 13, 633–640 (2022). https://doi.org/10.1007/s13193-022-01537-3

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