The autopsy showed this hepatocellular carcinoma occupying much of the volume of a cirrhotic liver. Furthermore, the tumor had invaded the diaphragm and ruptured into the peritoneal cavity, causing the bloody ascites.
The photo above shows a view of a longitudinal slice taken through the full length of the liver. The closer view, below, shows tumor at the top, cirrhotic liver at the bottom, and a fibrous reaction in between. Hepatocellular carcinomas can have a variety of gross patterns, including multinodular/multifocal, such as this one.