P14.11 Determination of the EGFR mutations including T790M in the cerebrospinal fluid of patients with leptomeningeal metastasis from EGFR mutant non small cell lung cancer.

P14.11 Determination of the EGFR mutations including T790M in the cerebrospinal fluid of patients with leptomeningeal metastasis from EGFR mutant non small cell lung cancer.