(A) Median time from glioma diagnosis was 11.9 (range 0.9–92.6) months for glioblastoma, 19.1 (1.4–202.8) months for astrocytoma, and 61.7 (3.9–274.8) months for oligodendroglioma (p < 0.0001). Median survival (B) from glioma diagnosis was 17.1 (range 3.1–99) months for glioblastoma, 33.5 (1.5–207) months for astrocytoma, and 132 (8.5–279) months for oligodendroglioma (p < 0.0001). (C) Median survival after LMD diagnosis was 3.8 (range 0.1–32.6) months for glioblastoma, 6.5 (0.1–28.5) months for astrocytoma, and 10.8 (1.8–67.7) months for oligodendroglioma (p = 0.0004). LMD = leptomeningeal disease.