with Diffusion Weighted Imaging

We are pleased to read the interesting article by Injoong Kim and colleagues (1) in the October 2012 issue of Korean Journal of Radiology. The authors examined the the histologic characteristics of hepatocellular carcinomas (HCCs) showing atypical enhancement patterns which would definitely add to the current literature. They found that HCCs showing atypical dynamic enhancement are usually smaller than typical HCCs. Since we have special interest on the diffusion magnetic resonance imaging (MRI) subject (2), we want to contribute information about the radiological evaluation of the small HCC nodules. HCC is the most common primary liver cancer and generally develops secondarily to chronic hepatitis or cirrhosis in elderly individuals. In the differential diagnosis of hepatocellular nodules up to 1 cm in diameter in the cirrhotic liver, regenerative nodules, low or high grade dysplastic nodule