I	Primary form
II	Secondary/multicentric form
C	Cervical spinal cord
cn	Canine
CNS	Central nervous system
CNSL	Central nervous system lymphoma
CP	Choroid plexus
CT	Cervicothoracic spinal cord
EAL	Extra-axial lymphoma
ED	Extradural
ELH	European Longhair cat
ESH	European Shorthair cat
F	Female
FL	Forelimbs
fn	Feline
HL	Hindlimbs
IC	Intracranial
ID-EM	Intradural-extramedullary
IM	Intramedullary
IP	Intraparenchymal mass
IPL	Intraparenchymal lymphoma
IVL	Intravascular lymphoma
L	Lumbar spinal cord
LC	Lymphomatosis cerebri
LL	Leptomeningeal lymphomatosis
M	Male
MM	Meningeal mass
NL	Neurolymphomatosis
NM	Neutered male
NSL	Nervous system lymphoma
PG	Pituitary gland
PNS	Peripheral nervous system
PNSL	Peripheral nervous system lymphoma
S	Sacral spinal cord
SC	Intraspinal
SCL	Intraspinal lymphoma
SF	Spayed female
T	Thoracic spinal cord
TL	Thoracolumbar spinal cord