This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Liver, Subject name: Surgery
[{'content': 'Which of the following liver tumors always merit surgery? \nSelect and explain. \nA. Hemangioma, B. Hepatic adenoma, C. Focal nodular hyperplasia, D. Peliosis hepatis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hepatic adenoma - As no characteristic radiological features to differentiate these lesions from malignant tumor. These tumors are thought to have malignant potential and resection is therefore the treatment of choice. Peliosis hepatis -Multiple small hemangiomas spread across the liver and is associated with immunosuppression .', 'role': 'assistant'}]