D F Grabski1, A S Pappo2, M J Krasin3, A M Davidoff1, B N Rao1, I Fernandez-Pineda4. 1. Department of Surgery, St. Jude Children's Research Hospital, Memphis, TN, USA. 2. Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA. 3. Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA. 4. Department of Surgery, St. Jude Children's Research Hospital, Memphis, TN, USA. Israel.Fernandez-Pineda@stjude.org.
Abstract
PURPOSE: To evaluate the epidemiologic, demographic, and clinical characteristics, as well as prognostic factors and long-term outcomes of mediastinal germ cell tumors (MGCT) in children. PATIENTS AND METHODS: A retrospective study of pediatric patients diagnosed with a primary MGCT between January 1963 and August of 2014 was performed. RESULTS: Twenty-five patients were identified. Six children with teratomas were treated with resection alone (median age 7.8 years, range newborn to 15 years) and were cured without recurrence or progression. Nineteen children were treated for a malignant MGCT (median age 11.7 years, range 7 months-18 years); 5 year overall survival (OS) was 0.39 ± 0.12. For malignant non-seminomatous mediastinal germ cell tumors, platinum-based chemotherapy regimen (OS 0.56 vs 0.14, p = 0.03), complete surgical resection with negative margins (OS 0.73 vs 0.11, p = 0.03); and localized disease (OS 0.76 vs 0.0, p = 0.004) demonstrated a survival advantage. CONCLUSIONS: Initial surgical resection is appropriate for teratomas. Localized disease, complete resection, and platinum-based chemotherapy are associated with improved survival in malignant non-seminomatous mediastinal germ cell tumors. Neoadjuvant, platinum-based three drug regimens followed by delayed surgical resection is the appropriate treatment modality for malignant mediastinal germ cell tumors.
PURPOSE: To evaluate the epidemiologic, demographic, and clinical characteristics, as well as prognostic factors and long-term outcomes of mediastinal germ cell tumors (MGCT) in children. PATIENTS AND METHODS: A retrospective study of pediatric patients diagnosed with a primary MGCT between January 1963 and August of 2014 was performed. RESULTS: Twenty-five patients were identified. Six children with teratomas were treated with resection alone (median age 7.8 years, range newborn to 15 years) and were cured without recurrence or progression. Nineteen children were treated for a malignant MGCT (median age 11.7 years, range 7 months-18 years); 5 year overall survival (OS) was 0.39 ± 0.12. For malignant non-seminomatous mediastinal germ cell tumors, platinum-based chemotherapy regimen (OS 0.56 vs 0.14, p = 0.03), complete surgical resection with negative margins (OS 0.73 vs 0.11, p = 0.03); and localized disease (OS 0.76 vs 0.0, p = 0.004) demonstrated a survival advantage. CONCLUSIONS: Initial surgical resection is appropriate for teratomas. Localized disease, complete resection, and platinum-based chemotherapy are associated with improved survival in malignant non-seminomatous mediastinal germ cell tumors. Neoadjuvant, platinum-based three drug regimens followed by delayed surgical resection is the appropriate treatment modality for malignant mediastinal germ cell tumors.
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