Is the recurrence rate of brain cancer high after three years?

Will brain tumors recur? How long will they recur? Is the recurrence rate high after three years? These are questions that many patients are concerned about. Malignant gliomas generally recur, while the recurrence rate of benign brain tumors is reported to be 10% to 26%. Please see the detailed introduction below.

Although many articles talk about recurrence rates, it is quite difficult to obtain an exact recurrence rate data. The literature reports that it is 10% to 26% or even higher. The slow growth of tumors and the inevitable retrospective series analysis caused by it make the effective evaluation of tumor recurrence rate complicated. In such series analysis, the follow-up period is very variable. If the follow-up period is not taken into account, the average recurrence rate obtained must be lower than the actual situation.
The chances of successive relapses are not rare. The probability of surviving without a second relapse after a relapse is 58% in 5 years and 44% in 10 years.
The interval between second recurrences was significantly shorter than that between first recurrences. Nearly half of the second recurrences occurred within 2 years of the first recurrence. The average interval between the first and second surgeries due to recurrences was 6 years, the interval between the second and third was 3.8 years, the interval between the third and fourth was 3 years, and the interval between the fourth and fifth was 1.6 years.