Radiochemotherapy of Postoperative Minimal Residual Disease in Neuroblastoma
Two-year survival of neuroblastoma patients has not been substantially improved in the last 20 years, either in localized and regional disease or in metastatic tumors (Tab. 1) [1, 16, 19, 23]. As in other tumors of childhood the anatomic extent of the disease is the main prognostic factor (Fig. 1), but host-tumor interrelations seem to be much more decisive in neuroblastoma  than the ability of chemotherapeutic agents to eradicate microscopic foci of metastatic deposits as they do in Wilm’s tumor and soft-tissue sarcoma. Thus, guidelines for treatment of postoperative minimal residual disease have been found in supervision of the urinary level of the biochemical markers of neuroblastoma by serial assays  and in the reappraisal of the various factors influencing survival [1, 4, 6, 9, 12, 23]. Age at diagnosis is the most prominent of these factors (Fig. 2), and infants under 1 year of age have a surprisingly good prognosis compared to children of 1 year or more, whether disease is localized or widespread.
KeywordsSarcoma Cyclophosphamide Catecholamine Neuroblastoma Vincristine
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