WHO	World Health Organization grading system
Fig.	figure
MRI	Magnetic Resonance Imaging
CT	computed tomography
Tab.	table
d	days
Y	years
M	male
F	female
P	patient
A	age
GTR	gross total removal
L	localization
L	left
R	right
PTV	preoperative tumor volume
D	tumor depth
EOR	extent of resection
NB	neurological status before surgery
LOC	loss of consciousness
R	retractor used (1: Endopath, 2: NICO)
LOR	length of retractor
COR	corticectomy dimension
NA	neurological status after surgery
LH	length of hospital stay
FU	months of follow-up
LP	late postoperative complications.