Although my husband had colon cancer and not PC, he had mets to the liver and underwent chemoembolization. No one warned us that it can cause serious damage to the galbladder. He became extremely sick and was in horrible pain. I took him to the ER, but they did nothing but sent him back home. He continued to get worse and it was finally determined that the chemoembolization "killed" his galbladder and by the time it was detected, it was gangreen and he was at risk for sepsis. His galbladder was removed and he had tubes to drain the infection.
I later found a website that said this is a risk of chemoembolization, which I wish I had found earlier.
Be sure to read everything you can get your hands on to be informed. Don't rely on the docs to tell you everything you need to know.