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Detti, Beatrice; Scoccianti, Silvia; Maragna, Virginia; Lucidi, Sara; Ganovelli, Michele; Teriaca, Maria Ausilia; Caini, Saverio; Desideri, Isacco; Agresti, Benedetta; Greto, Daniela; Buccoliero, Anna Maria; Puppa, Alessandro Della; Sardi, Iacopo; Livi, Lorenzo
La Radiologia medica, 10/2022, Volume: 127, Issue: 10Journal Article
Background Pleomorphic xanthoastrocytoma (PXA) is a rare low-grade brain tumor. To date, limited studies have analyzed factors affecting survival outcomes and defined the therapeutic strategy. The aim of this retrospective analysis was to investigate the clinicopathologic characteristics of PXA and identify factors associated with outcomes. Methods We retrospectively analyzed a cohort of 16 adult and children patients with PXA who underwent primary resection from 1997 to 2019, referred to our Radiation Oncology Unit and to Meyer’s Paediatric Hospital. We also reviewed the relevant literature. Results All patients underwent primary surgical resection; 10 patients received adjuvant radiation treatment course, ranging from DTF 54 to 64 Gy; 8 of them received, in addition, concurrent adjuvant chemotherapy; 6 patients underwent only radiological follow-up. After a median follow up was 60 months: median OS was 34.9 months (95% CI 30–218), 1-year OS 87%, 5-years OS 50%, 10-years OS 50%; median PFS 24.4 months (95% CI 13–156), 1-year PFS 80%, 5-years PFS 33%, 10-years PFS 33%. A chi-square test showed a significant association between OS and recurrent disease ( p = 0.002) and with chemotherapy adjuvant treatment ( p = 0.049). A borderline statistical significant association was instead recognized with BRAF mutation ( p = 0.058). Conclusions Despite our analysis did not reveal a strong prognostic or predictive factor able to address pleomorphic xanthoastrocytoma management; however, in selected patients could be considered the addition of adjuvant radiation chemotherapy treatment after adequate neurosurgical primary resection. Furthermore, recurrent disease evidenced a detrimental impact on survival.
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