Figure 1.

A solitary hepatocellular carcinoma (HCC) lesion with relatively homogenous arterial enhancement was found to have heterogeneous apparent diffusion coefficient (ADC) signal intensity on pre-procedure imaging. In particular, the medial aspect of the lesion was hypointense relative to the lateral aspect (red asterisk). The first post-procedure imaging study at 2 months demonstrated a small area of residual tumor in the portion of the tumor noted to have low ADC values. At 4 months, there was progression of disease in this same location.