PURPOSE: To evaluate and compare obliteration rates (OBRs) and treatment-obliteration intervals (TOIs) for cerebral arteriovenous malformations (cAVMs) treated with Gamma Knife radiosurgery in children/adolescents and adults; and to determine factors predicting the OBR and TOI in these two populations. METHODS AND MATERIALS: This study concerned 62 children/adolescents and 193 adults observed for > or = 3 years. Fisher exact two-tailed and Wilcoxon rank-sum tests, multiple logistics, and Cox proportional hazard models were used for statistical analysis. RESULTS: The overall OBR was 85.5% in children/adolescents and 87.6% in adults (p = 0.671), but children/adolescents showed higher 36-month actuarial OBRs (69.35%) and shorter median TOIs (25.7 months) than adults (66.84% and 28.2 months; p = 0.006 and p = 0.017, respectively). In children/adolescents, lower Spetzler-Martin grades (p = 0.043) and younger age (p = 0.019) correlated significantly with OBRs, and lower Spetzler-Martin grades (p = 0.024) and noneloquent cAVM locations (p = 0.046) with TOIs. In adults, low flow through the cAVM and < 6.2-cm3 volume were associated with both OBR and TOI (p = 0.012 and p = 0.002, respectively). CONCLUSIONS: The differences in OBRs within 3 years and TOIs, although slight, seem to show that pediatric cAVMs behave differently from those in adults after Gamma Knife radiosurgery.
PURPOSE: To evaluate and compare obliteration rates (OBRs) and treatment-obliteration intervals (TOIs) for cerebral arteriovenous malformations (cAVMs) treated with Gamma Knife radiosurgery in children/adolescents and adults; and to determine factors predicting the OBR and TOI in these two populations. METHODS AND MATERIALS: This study concerned 62 children/adolescents and 193 adults observed for > or = 3 years. Fisher exact two-tailed and Wilcoxon rank-sum tests, multiple logistics, and Cox proportional hazard models were used for statistical analysis. RESULTS: The overall OBR was 85.5% in children/adolescents and 87.6% in adults (p = 0.671), but children/adolescents showed higher 36-month actuarial OBRs (69.35%) and shorter median TOIs (25.7 months) than adults (66.84% and 28.2 months; p = 0.006 and p = 0.017, respectively). In children/adolescents, lower Spetzler-Martin grades (p = 0.043) and younger age (p = 0.019) correlated significantly with OBRs, and lower Spetzler-Martin grades (p = 0.024) and noneloquent cAVM locations (p = 0.046) with TOIs. In adults, low flow through the cAVM and < 6.2-cm3 volume were associated with both OBR and TOI (p = 0.012 and p = 0.002, respectively). CONCLUSIONS: The differences in OBRs within 3 years and TOIs, although slight, seem to show that pediatric cAVMs behave differently from those in adults after Gamma Knife radiosurgery.
Authors: A Beltramello; P Zampieri; G K Ricciardi; A Pasqualin; A Nicolato; F Sala; E Piovan; M Gerosa Journal: Interv Neuroradiol Date: 2008-05-12 Impact factor: 1.610
Authors: A Beltramello; G K Ricciardi; E Piovan; P Zampieri; A Pasqualin; A Nicolato; F Foroni; F Sala; L Bassi; M Gerosa Journal: Interv Neuroradiol Date: 2009-11-04 Impact factor: 1.610
Authors: Livia C Bianchi; Marcello Marchetti; Lorenzo Brait; Achille Bergantin; Ida Milanesi; Giovanni Broggi; Laura Fariselli Journal: Neurol Sci Date: 2009-09-23 Impact factor: 3.307
Authors: D R Buis; C M F Dirven; F J Lagerwaard; E S Mandl; G J Lycklama A Nijeholt; D S Eshghi; R van den Berg; J C Baayen; O W M Meijer; B J Slotman; W P Vandertop Journal: J Neurol Date: 2008-02-19 Impact factor: 4.849