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  • Title: Gliomatosis cerebri having a poor performance status without recurrence after radiotherapy: a single institutional experience.
    Author: Jung TY, Yoon MS, Kim YH, Jung S, Kim IY, Jang WY, Moon KS, Lee KH, Kim SK.
    Journal: Clin Neurol Neurosurg; 2015 Mar; 130():1-5. PubMed ID: 25569296.
    Abstract:
    OBJECTIVE: Radiotherapy (RT) has been advocated for gliomatosis cerebri (GC) to delay tumor progression. However, patients with GC may experience poor performance status without recurrence after RT. Herein, we reviewed the responses of patients with GC treated with RT. MATERIALS AND METHODS: Seventeen patients with diffuse radiologic infiltration of more than two cerebral lobes and diagnosed as having grade II (N=12) or III (N=5) glioma were treated with a mean radiation dose of 51.8 Gy (range, 42-59.4 Gy). The mean radiation volume to a mean marginal dose of 42.8 Gy (range, 36-45 Gy) was 693.4 cc (range, 316.5-1279.6 cc), which was 45.3% of the mean whole brain volume. We reviewed the clinical prognostic factors related to progression-free survival (PFS) and overall survival (OS) in all patients and described characteristics of patients with poor performance (Eastern Cooperative Oncology Group performance scale 3-4) without recurrence. RESULTS: In all patients, the median PFS was 12.3 months, and oligodendroglial pathology (p=0.002) and non-enhanced tumor (p=0.002) were associated with an improved PFS. The median OS was 39.3 months, and young age and adjuvant chemotherapy were associated with improved OS (p=0.022 and 0.002, respectively). Based on multivariate analysis, adjuvant chemotherapy was significantly associated with a longer OS (p=0.012; hazard ratio=0.099; 95% CI, 0.016-0.596). Five patients (29.4%) showed poor performance without recurrence. The median age of these 5 patients was 65 years (range, 60-75 years). The mean radiation volume to a mean marginal dose of 41 Gy (range, 36-45 Gy) was 539.9 cc (range, 255.5-983.1 cc). The pathologic diagnosis was grade II glioma in 2 patients and grade III in 3 patients. The median OS was 10.0 months (range, 8.2-45.9 months). CONCLUSIONS: Some GC patients, especially the elderly, might have a poor performance status without recurrence after RT of a larger radiation field.
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