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: Radiology
[{'content': 'The scan with highest sensitivity to detect adrenal metastasis due to bronchogenic carcinoma is: \nSelect and explain. \nA. Contrast Enhanced CT abdomen with Adrenal protocol, B. PET scan, C. MRI scan, D. Radionuclide scan', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Scans to differentiate adrenal adenoma from adrenal metastasis are: CECT - Chemical shift MRI FDG-PET PETscan has almost 100 % sensitivity for detecting adrenal metastasis, so a negative study excludes the possibility of adrenal mets. But adenomas can give false positive test. Ref: Fundamentals of Diagnostic Radiology, Edition - 4, Page - 427.', 'role': 'assistant'}]