Hepatocellular carcinoma presenting with paraneoplastic neurologic syndrome in a hepatitis B surface antigen-positive patient

We report a hepatitis B surface antigen-positive patient who presented with paraneoplastic peripheral sensorimotor polyneuropathy and cranial nerve involvement, 6 months before a diagnosis of hepatocellular carcinoma was made. This makes us think that neurologic manifestations in hepatitis B surface antigen-positive patients warrant investigation to exclude an underlying hepatocellular carcinoma.