Slide 1 

Gross:  Hepatocellular carcinoma has a variable macroscopic appearance.  This particular hepatocellular carcinoma grew as a predominantly solitary mass occupying most of the right lobe of the liver of a 69 year old white male.  The tumor is predominantly tan-brown but you will notice focal areas of yellow necrosis as well as dark red areas of hemorrhage.

Slide 2

The histologic section in your class set was taken at the junction of the tumor and the non-neoplastic liver.

Slide 3

The junction of tumor and normal liver is seen to better advantage at higher power.  The hepatic  parenchyma at the edge of the tumor is compressed, giving the false impression that the carcinoma is encapsulated.