Glioblastoma
The most common length of survival following diagnosis is 12 to 15 months, with fewer than 3% to 5% of people surviving longer than five years. Without treatment survival is typically 3 months.
Immature teratoma
In the past, survival rates were low for high-grade immature teratomas. Norris "et al." (1976)"," reported a survival rate of 82% for patients with grade 1 tumors, 62% for grade 2 and 30% for grade 3 tumors. However, these results antedate the use of multi-agent chemotherapy. With the advent of multiagent chemotherapy after surgical resection, long-term remission and increased survival rates have been achieved. Pashankar "et al." (2016)"," reported that the estimated 5-year overall survival rate for grade 3 Stage I and II disease was 91% compared with 88% for grade 3, Stage III and IV disease.