Liver cancer is a bad disease. When the liver is failing, fluid does not stay in the vessels for many reasons. The red marks I cannot say anything about without seeing them BUT they can be small areas of blood leakage either due to the same problems causing fluid (no proteins being made by the liver and then no ability to clot and no ability to hold in fluid), or just irritation from socks or low platelets and small bleeding. The bleeding is often the final reason for death in liver disease including liver cancer.