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  • Title: Influence of extent of surgery and tumor location on treatment outcome of patients with glioblastoma multiforme treated with combined modality approach.
    Author: Jeremic B, Grujicic D, Antunovic V, Djuric L, Stojanovic M, Shibamoto Y.
    Journal: J Neurooncol; 1994; 21(2):177-85. PubMed ID: 7861194.
    Abstract:
    Between 1988 and 1991, eighty-six patients with glioblastoma multiforme were evaluated in order to define the influence of extent of surgery and tumor location on treatment outcome. Patients underwent surgery followed by postoperative hyperfractionated radiotherapy and chemotherapy delivered according to one of two consecutive protocols. Surgery consisted of biopsy in 25 (29%) patients and subtotal or gross total tumor resection in 61 (71%) patients. Frontally located tumors were noted in 26 (30%) patients and other tumor locations were noted in 60 (70%) patients. Patients having more radical surgery had longer median survival time (MST) and higher 1- and 2-year survival rates than those with biopsy only (56 vs 29 weeks, respectively; 62% and 23% vs 16% and 0%, respectively; p = 0.00000). Patients having frontally located tumors had longer MST and higher 1- and 2-year survival rates than those with other tumor locations (101 vs 47 weeks, respectively; 76% and 44% vs 37% and 2.5%, respectively; p = 0.00001). Multivariate analysis confirmed that extent of surgery and tumor location were independent prognostic factors in patients with glioblastoma multiforme. Regarding progression-free survival, patients having more radical surgery had longer median time to tumor progression (MTP) than those with biopsy only (33 weeks vs 21 weeks, respectively). Also, progression-free survival at 1 year was higher in radically resected group than in biopsy only group (20% vs 0%, respectively; p = 0.00000). Patients with frontally located tumors had longer MTP (42 weeks) and higher progression-free survival at 1 year (42%) than those with other tumor location (28 weeks and 1.7%, respectively; p = 0.00002).(ABSTRACT TRUNCATED AT 250 WORDS)
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