If it's any help . . . my wife had two craniotomies, cancer too, in December. She came out of those two surgeries walkin' talkin' and cussing out nurses. Fighting the cancer now too. Doing well. You will too.
The doctors, they are magicians. Surgery plotted by MRI imaging translated to CNC while the neurosurgeon monitors/controls through binocular microscope, taking over the excision, especially at the margins of the cancerous/non-cancerous tissues.