Medulloblastoma in adults: clinical characteristics and treatment

Long-term survival is possible in adults with medulloblastoma with rates of approximately 50-60% at 5 years, and 40-50% at 10 years. As the literature data are based on retrospective studies, treatments are neither randomized nor uniform, however some treatment cornerstones have been identified. The first step is surgery, which should be as radical as possible; adjuvant ra diotherapy must be 55 Gy on the posterior fossa, and 36 Gy on the remaining cranial-spinal axis; adjuvant chemo therapy may be useful in patients at h igh risk of recurrence provided it is administered before radiotherapy in m oderate-high dosages and includes cisplatin, etoposide and cyclophosphamide . This chemotherapy program should not overly delay the start of radio-ther apy, be recycled as soon as blood count permits and not exceed two or three cycles. Adjuvant chemotherapy after radiotherapy, even if indicated in cas es with persistent tumour; may have an adverse effect due to the poor marro w reserves of these patients. At recurrence, the prospects of cure are very poor due to the deficient hematopoietic reserve, but in very young patient s high dose chemotherapy with marrow rescue might be usefully employed.