SQSTM1 and hepatocellular carcinoma: Both hyaline and Mallory bodies were heavily immunoreactive for p62 protein in formalin-fixed paraffin sections of hepatocellular carcinoma (Figure 5D inset), whereas under the same technical conditions no p62 reactivity was detected in the large clear PaCS-enriched cytoplasmic areas of serous microcystic adenoma.