At 5:30 PM, Yan Feifan, Lo Jun, and Wang Chuan gathered once again in Pan Lirong's hospital room.
Seeing them arrive, Pan Lirong put down the document he was reading and readily turned onto his side on the hospital bed.
Following Yan Feifan's instructions, he pulled his knees and chin as close to his chest as possible.
The purpose of this was to curve his spine into a bow shape, widening the gaps between his vertebrae as much as possible to facilitate the puncture.
This was a crucial step for Yan Feifan before the surgery: a spinal puncture to obtain a tumor tissue sample.
Every person's tumor has slightly different characteristics.
Yan Feifan needed this puncture to acquire a sample of the tumor tissue within Pan Lirong's spinal canal. Through testing, analysis, and observation, he would then precisely determine the required dosage of absolute ethanol for injection.
