LMD	Leptomeningeal disease
MS	Multiple sclerosis
CNS	Central nervous system
NHL	Non-Hodgkin’s lymphoma
ALL	Acute lymphoblastic leukemia
CSF	Cerebrospinal fluid
CN	Cranial nerve
NCNN	National Comprehensive Cancer Network
KPS	Karnofsky performance scale
SWS	Sturge-Weber syndrome
MRI	Magnetic resonance imaging
CEA	Carcinoembryonic antigen
ICP	Intracranial pressure
VPS	Ventriculoperitoneal shunt
WBRT	Whole brain radiation therapy
CSI	Craniospinal irradiation
ICI	Immune checkpoint inhibitor
RCT	Randomized controlled trial
MC	Meningeal carcinomatosis
LBM	Leptomeningeal breast cancer metastasis
ER	Estrogen receptor
PR	Progesterone receptor
HER2	Human epidermal growth factor receptor 2
EGFR	Epidermal growth factor receptor
BBB	Blood brain barrier
ctDNA	Tumor derived DNA
HCB	Hot cross bun
LLM	Leptomeningeal lung cancer metastasis
NSCLC	Non-small cell lung cancer
BM	Brain metastases
ALK	Anaplastic lymphoma kinase
SCLC	Small cell lung carcinoma
LUAD	Lung adenocarcinoma
LUSC	Lung squamous cell carcinoma
ACTA2	Actin gene
EpCAMs	Epithelial cell adhesion molecules
TKI	Tyrosine kinase inhibitor
LMM	leptomeningeal melanoma metastasis
MCAM	Melanoma cell adhesion molecule
MMP	Metalloproteinase
VEGFA	Vascular endothelial growth factor A
CTC	Circulating tumor cells
NGS	Next Generation Sequencing
ddPCR	Droplet digital PCR
TT	Targeted therapies
GBM	Glioblastoma
CML	Chronic myelogenous leukemia
CLL	Chronic lymphoblastic leukemia
GCO	Global cancer observatory
SEER	Surveillance, epidemiology, and end results
CBC	Complete blood count
WBC	White blood count
HMA	Hypomethylating agent
FLT3	FMS-like tyrosine kinase 3
BCMA	B-cell maturation antigen
ACE	Angiotensin converting enzyme