This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Laparoscopic cholecystectomy done in a patient with cholelithiasis. Pathology report shows adenocarcinoma with invasion of muscular layer. CT was normal. Further t/t is \nSelect and explain. \nA. Wait and regular follow up, B. Wedge hepatic resection with lymph node dissection, C. Excise all port sites, D. Radiotherapy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: HEPATIC RESECTION\xa0 (Indications)\xa0\xa0\n\nParasitic and non-parasitic cysts.\xa0\xa0\nBenign and primary malignant tumours of the liver.\xa0\xa0 \nSecondary tumour that involves by direct extension\xa0 like from carcinoma of gallbladder or limited\xa0 secondaries from carcinoma colon/carcinoids.\nTrauma to liver.Removal of small portion of liver either within the\xa0 segment or traversing segments is called as wedge\xa0 resection of the liver.', 'role': 'assistant'}]