Dr. Swender: You wanna remove her hippocampus?
Derek: One of them. It's a common procedure for seizure patients
Dr. Swender: Removing her hippocampus could compromise her memory, her speech, she wouldn't be able to practice medicine anymore.
Derek: I have performed this surgery hundreds of times.
Dr. Swender: On cancer patients?
Derek: No. But it's...
Izzie: If you do the surgery I could lose my memory?
Derek: ... It's unlikely but it's possible.
Izzie: And, if you don't do the surgery...
Dr. Swender: We could shrink the tumor with IL2.
Izzie: If the tumor doesn't kill me first.
Derek: Why take the chance?
Dr. Swender: Have you even done a WADA test to see how her memory would be affected?
Derek: Putting her brain to sleep and asking her to remember a bunch of flash cards is not an accurate assessment of the post surgical outcome.
Dr. Swender: But, it would tell us whether or not she could function afterwards. And, as Dr. Stevens primary physician...
Derek: Fine, I'll do it. It's unnecessary but...
Dr. Swender: The surgery is unnecessary.
Derek: The tumor is already symptomatic, she's having hallucinations.