Without work up, biopsy, it is hard to even speculate.
Let me put it this way.
End stage cirrhosis has a high and rapid mortality.
It might not have been from drinking at all, but could have been from chronic hepatitis
Or hepatitis from hemochromatosis.
So, any of these could lead to cirrhosis over time, if sub clinical an chronic.
Without lab samples it is impossible to comment on the tumor. This was probably secondary to the chronic liver inflammation and scarring.
Men tend to tough things out and ignore minor symptoms. He might have had only minor symptoms, if any, for years.
So this is my insight so far.
Please let me know if you have further questions.
Just use reply to expert as needed.
Please don’t forget a positive rating.