We all have various weird stuff in us, the older the more. Cystes, weird bulges, benign cancers that wont kill us for 50 years. If you are a male say above 40 or 50, you probably have some very early (or not) prostate cancer.
Often you need an invasive procedure to get more info. Even then its quite often not 100% clear if surgery is overall safer and better than keeping and monitoring.
We like this idea of omnipotent medicine but its a pipe dream. Difficult procedures are extremely expensive regardless of location (US stands apart as always but still a valid point), and even ignoring price there simply isnt enough staff/equipment. Covid and often selfish clueless people certainly didnt help.
Medicine tries to fix as much as it can, which is mostly not enough. The hard part is accepting that when it becomes about a close one. There is no easy solution.
Source: wife is an emergency/gp doctor, went through this countless times. And much worse, even smart people become completely irrational, cruel or selfish very easily in such situations.