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Published on: February 12, 2017
A Study of Patients with Primary Mediastinal Germ Cell Tumors Treated Using Multimodal Therapy
Yutaro Tanaka1, Takehiko Okamura1, Takashi Nagai1
1Department of Urology, Anjo Kosei Hospital, Anjo, Japan.
Objectives:
Primary mediastinal germ cell tumors (PMGCTs) are rare, which often makes them difficult to treat. Herein, we examined patients with PMGCTs who underwent multimodal treatment.
Methods:
We examined 6 patients (median age: 25 years, range: 19-27 years) with PMGCTs who underwent multimodal treatment between April 2001 and March 2015. Three patients had seminomas, 2 patients had yolk sac tumors, and 1 patient had choriocarcinoma. The median observation period was 32.5 months (range: 8-84 months).
Results:
Three of the 6 patients received initial operation followed by 3-4 courses of chemotherapy (bleomycin, etoposide, and cisplatin (BEP) or etoposide and cisplatin (EP)). One patient developed multiple lung metastases 17 months after surgery; received salvage chemotherapy with vinblastine, ifosfamide, and cisplatin; and achieved complete remission. The remaining 3 patients received initial BEP and EP chemotherapy. Multiple lung metastases and supraclavicular lymph node metastases were detected in 2 of these patients at the initial diagnosis. The patients underwent resections to remove residual tumor after treatment, and no viable tumor cells were found.
Conclusions:
Reliable diagnosis and immediate multimodal treatments are necessary for patients with PMGCTs. The 6 patients treated in our hospital have never experienced recurrence after the multimodal treatment.
Insights
Multimodal treatment, including chemotherapy and surgery, is effective for primary mediastinal germ cell tumors (PMGCTs). This approach led to no recurrence in six patients, highlighting its importance for these rare cancers.
Area of Science:
- Oncology
- Thoracic Surgery
- Medical Oncology
Background:
- Primary mediastinal germ cell tumors (PMGCTs) are rare and challenging to treat.
- Effective management strategies for PMGCTs require careful consideration due to their infrequent occurrence.
Purpose of the Study:
- To evaluate the outcomes of multimodal treatment in patients diagnosed with primary mediastinal germ cell tumors.
- To assess the efficacy and recurrence rates following combined therapeutic approaches for PMGCTs.
Main Methods:
- Retrospective analysis of 6 patients with PMGCTs treated between April 2001 and March 2015.
- Treatment protocols included surgery followed by chemotherapy (BEP or EP) or initial chemotherapy followed by surgical resection of residual tumor.
- Chemotherapy regimens involved combinations such as bleomycin, etoposide, and cisplatin (BEP) or etoposide and cisplatin (EP), with salvage chemotherapy used in one case.
Main Results:
- Three patients underwent initial surgery followed by chemotherapy; one developed lung metastases but achieved complete remission with salvage chemotherapy.
- Three patients received initial chemotherapy (BEP/EP); two had metastases at diagnosis but achieved complete remission after resection of residual tumor.
- All 6 patients treated with multimodal therapy showed no evidence of viable tumor cells post-treatment and experienced no recurrence during the observation period.
Conclusions:
- Prompt and accurate diagnosis is crucial for initiating timely multimodal treatment in PMGCT patients.
- Multimodal treatment, integrating surgery and chemotherapy, demonstrates high efficacy in managing primary mediastinal germ cell tumors.
- The observed lack of recurrence in treated patients underscores the success of this combined therapeutic strategy.
