[anotherthought1]

I am in medical school. Just checked my notes for hepatic cyst. One thought could be an Echinococcus parasite infection - https://www.cdc.gov/parasites/echinococcosis/

Imaging - https://imgur.com/a/b0gJ3MZ

Wikipedia - https://en.wikipedia.org/wiki/Echinococcosis#Regions

Most likely this is not it. However, I would feel bad if I didn't at least mention it. Sincerely hoping for the best for you and your family!