Hello david.lee,,
              high feritin level- seen  in iron storage disorders-hemochromtosis, hemosiderosis, porphyyria or chronic disease process, 
alcoholic liver disease , adult onset still's disease, 
hemophagocytic lymphohistiocytosis, hemolytic anaemia,
sideroblastic anemia, autoimmune disorder, chronic  infection - In USG-fatty liver- increase risk of diabetes, hypertension,obesity, dyslipedemia,  with reduce echogeniccity- may be seen in so many disease, in hepatocellular carcinoma- hyperechogenic &hypoechogenic area present, in metastic   carcinoma of liver diffuse foci present in liver  from breast   cancer, 
colorectal cancer, advice- CT SCAN with contrast if doubt MRI, PE(
pulmonary embolism)- risk increase in prolonged bed rest,or cancer investigation-D-dimer test,CTpulmonary angiography, your history is not proper,you wants to rule out which cancer, can you  mention, hope my advice is useful yo you, thank you.