Question: A 47-year-old woman was referred to our department for a liver mass. She had a significant past history of being a hepatitis B carrier on yearly abdominal ultrasound imaging in an outpatient setting. Her last abdominal ultrasound was performed on May 2014, and was reported as being normal. She was asymptomatic. Physical examination was unremarkable. She underwent an abdominal ultrasound on August 2015, which showed a 3.8-cm hypoechoic lesion in the lateral segment of the liver. Her alpha-fetoprotein and liver function tests were normal.