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  • Title: Adult medulloblastoma: an analysis of survival and prognostic factors.
    Author: Le QT, Weil MD, Wara WM, Lamborn KR, Prados MD, Edwards MS, Gutin PH.
    Journal: Cancer J Sci Am; 1997; 3(4):238-45. PubMed ID: 9263630.
    Abstract:
    PURPOSE: This analysis aimed to review the experience in the management of adult medulloblastoma at the University of California, San Francisco, and to identify important prognostic factors for survival and posterior fossa control. PATIENTS AND METHODS: We performed a retrospective review of 34 adult patients, age > or = 15, with cerebellar medulloblastoma treated with radiotherapy at the University of California, San Francisco from 1970 to 1994. All patients underwent a surgical procedure (complete resection in 17, subtotal resection in 10, and biopsy alone in seven), followed by craniospinal irradiation. Most patients treated after 1979 also received chemotherapy. Twenty were classified as poor-risk due to either incomplete resection or evidence of disease outside of the posterior fossa at diagnosis. RESULTS: The 5-year posterior fossa control and overall survival rates were 61% and 58%, respectively. The majority of relapses occurred in the posterior fossa (14 of 17). Multivariate analysis revealed that age (favoring older patients), gender (favoring female patients), and extent of disease at diagnosis (favoring localized disease) were important prognostic factors for posterior fossa control. There was a trend toward improved posterior fossa control with higher radiation dose to the posterior fossa in patients with a complete resection. Gender and extent of disease at presentation were significant prognostic factors for survival. The 5-year survival rates were 92% for female patients versus 40% for male patients, and 67% for patients with localized disease versus 25% for those with disseminated disease. The prognosis following recurrence was poor; all died of the disease. DISCUSSION: Survival for adult medulloblastoma was comparable to its pediatric counterpart. In patients with localized disease at presentation, gender (favoring female patients) and age (favoring older patients) were important prognostic factors for posterior fossa control and survival. In patients with disseminated disease at presentation, the prognosis is poor, and innovative therapy is needed to improve survival.
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