Tumors of the skull base, especially those near the brainstem, have always been considered the most challenging type of brain tumor resection.
For Yan Feifan, this was business as usual.
Neurosurgeons could handle less difficult brain tumor surgeries on their own; they wouldn't call in for backup.
For Yan Feifan, the most difficult part of a skull base tumor surgery was designing the puncture trajectory.
Some trajectories required piercing through healthy, functional brain tissue, which would inevitably cause some damage.
Torn between two evils, Yan Feifan had to design a puncture path that would cause the absolute minimum amount of damage.
Under the watchful eyes of Dr. Kevin Vega, Yan Feifan openly, without any attempt to hide his methods, performed a dehydration denaturation test using absolute ethanol on the biopsied tumor tissue.
An hour and ten minutes later, Yan Feifan had his results.
