Fig. 1.

Survival curves for patients with primary CNS lymphoma seen in 1985–1994 (○, n = 466), in 1995–1999 (●, n = 142), and in 2000–2004 (▴, n = 131). The second and third groups had significantly better survival rates than the first group (p = 0.0004 and 0.0033, respectively).