====== Cranial radiation ======

Following surgery for a tumor (craniotomy or spinal surgery), most surgeons wait ≈ 7–10 days before
instituting XRT to the surgical site (allows initiation of healing from surgery).

CNS tumors that are very radiosensitive include:

1. lymphoma – they “melt away” with XRT but tend to recur later

2. germ cell tumors

3. metastatic small cell lung cancer

See the appropriate section for specific indications and doses 

For side effects, see [[Radiation injury]] and [[necrosis]]