Study Year Patients presenting with symptoms who had improvement after GKRS (%) Kilburn 2014 NR Peterson 2014 NR Jung 2013 32 Sengoz 2013 NR Kawabe 2012 NR Leeman 2012 NR Li 2012 NR Lin 2012 NR Yoo 2011 NR Valery 2011 57 Hatiboglu 2011 NR Kelly 2011 50 Koyfman 2010 NR Samblas 2009 42 Lorenzoni 2009 NR Kased 2008 10 Hussain 2007 9 Fuentes 2006 57 Yen 2006 60 Shuto 2003 NR Huang 1999 50

Abbreviations: NR – not reported

Table 4: Reported improvement of brainstem tumor-related symptoms [1,2,4-22].