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  • Title: Influence of tumor site and histology on long-term survival in 193 children with extracranial germ cell tumors.
    Author: De Backer A, Madern GC, Pieters R, Haentjens P, Hakvoort-Cammel FG, Oosterhuis JW, Hazebroek FW.
    Journal: Eur J Pediatr Surg; 2008 Feb; 18(1):1-6. PubMed ID: 18302061.
    Abstract:
    AIMS: Although germ cell tumors (GCT) supposedly share the same cell type of origin, their clinical course differs considerably depending on tumor site and histology. The aim of this work was to study long-term survival stratified for tumor site and tumor histology. MATERIALS AND METHODS: The medical records of 193 consecutive infants and children with extracranial GCT were studied. The GCT arose in the following anatomical sites: sacrococcygeal (n = 70), ovary (n = 66), testis (n = 20), retroperitoneum (n = 12), neck (n = 8), mediastinum (n = 7), and miscellaneous (n = 10). Histological analysis revealed 152 teratomas (mature: 115, immature: 37), 27 yolk sac tumors, 8 mixed tumors, 2 dysgerminomas, 2 gonadoblastomas, 1 choriocarcinoma and 1 embryonal carcinoma. RESULTS: Overall survival (OS) for the whole patient group was 0.91 +/- 0.02, and event-free survival (EFS) was 0.88 +/- 0.02 at ten years. Patients with gonadal GCT had a higher probability of OS than those with extragonadal GCT (p = 0.029). Patients with cervical and mediastinal tumors had a lower probability of EFS than those with gonadal, retroperitoneal or sacrococcygeal GCT (p = 0.018). Patients with choriocarcinoma, embryonal carcinoma, immature teratoma, yolk sac tumor and mixed GCT had a lower probability of EFS than patients with mature teratoma or gonadoblastoma (p < 0.001). CONCLUSIONS: Mortality in children with extracranial germ cell tumors is not only dictated by malignant histology, but also, as in the case of mature teratomas, by occurrence at certain sites.
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