Table 1:

Clinical and Tumor Characteristics of NSCLC Patients Diagnosed with Leptomeningeal Carcinomatosis.

Patient Characteristic	Percent (Number/Total)
Number of Patients	30
Adenocarcinoma Histology	100% (30/30)
Women	67% (20/30)
Age (Mean)	58
Stage IV at NSCLC Diagnosis	73% (22/30)
Current or Former Smoker	30% (9/30)
LM Disease at Time of Metastatic Presentation	27% (8/30)
Diagnosis by MRI	97% (29/30)
Diagnosis by Lumbar Puncture	33% (10/30)
ECOG PS at LM Diagnosis
- ECOG PS 0–1	46% (14/30)
- ECOG PS ≥ 2	54% (16/30)
Neurologic Symptoms	70% (21/30)
Brain metastases
- Prior to LM Diagnosis	50% (11/22)
- At Diagnosis of LM	73% (22/30)
Race
- Asian	53% (16/30)
- White	37% (11/30)
- Hispanic	7% (2/30)
- Not Known	3% (1/30)