It could well lead to Cirrhosis of the liver. Not to mention Adhesion that could become painful. I'm not too sure how likely either issue is, however I wouldn't like to assume that scarring your liver is going to be completely free of complications... Though by the time you're having an intraoperative procedure done on your liver, you're already not free from complications.
Do you have any medical background ? Did you ever use a coagulator ? Or ever saw a liver with your own eyes and the eventual scars those get because of routinely occurring small infarctii or such ? I doubt so, as this is utter bullshit.
> I'm not too sure how likely either issue is
Not likely at all in this universe
Briefly, working as a theatre technician in coronary intervention. We used diathermy etc in the lab.
In this case he did it to a patient and the marks didn't heal. (By definition he works on patients who's livers are less likely to heal), but it didn't cause any further harm.
Even minor scarring adds to the bodies burden in healing, so I think it's hard to definitively say that the laser inscribed initials did not cause any harm or increased risk at all. After all, these were not strong, healthy people -- they were sick enough to require liver surgery... and one of them had to have followup treatment which is when the initials were discovered.
Is it certain that a couple inches of laser beam scar tissue in a liver has not, and will not in the future cause any medical issues for the patients in question?