Gut and liver involvement in pediatric hematolymphoid malignancies

Figure 2 Liver biopsy tissue showing normal hepatocytes with the sinusoids infiltrated by monomorphic round cell with darkly staining nuclei, small inconspicuous nucleoli and a narrow rim of cytoplasm. The infiltrating cells were positive for CD20, nuclear positivity for terminal deoxynucleotidyl transferase and high MIB1 index of 90%, suggestive of a B cell lymphoblastic lymphoma.