Table 1.

Clinical characteristics of the 108 patients

Characteristics	No. of Patients (%)
Age (years)
<65	65 (60.2%)
≥65	43 (39.8%)
Gender
Male	53 (49.1%)
Female	55 (50.9%)
Histology
Adenocarcinoma	85 (78.7%)
Non adenocarcinoma	23 (21.3%)
ECOG PS
1–2	87 (80.7%)
3–4	21 (19.3%)
Time between NSCLC and LM
≤12 months	78 (72.2%)
>12 months	30 (27.8%)

ECOG PS, Eastern Cooperative Oncology Group performance status

LM, leptomeningeal metastases; NSCLC, non-small cell lung cancer.