system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:ELI5: If Cancer is spread via the lymphatic and blood systems, can't we disconnect all the ones that travel to and supply the tumour, thereby preventing it from spreading or growing?
gpt
That's exactly what you do to surgically excise a tumor.

Some tumors grow in locations where surgery would be impractical or extremely dangerous though. Which is where treatments like targeted radiation come in.