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: Medicine
[{'content': 'The most common cause of malignant adrenal mass is \nSelect and explain. \nA. Adrenocoical carcinoma, B. Malignant phaeochromocytoma, C. Lymphoma, D. Metastasis from another solid tissue tumor', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Metastasis from another solid tissue tumor The most common cause of adrenal tumors is metastasis from another solid tumor like breast cancer and lung cancer. Malignant Percentage Adrenocoical carcinoma 2-5% Malignant pheochromocytoma <I% Adrenal neuroblastoma <0- 1% Lymphomas (incl. primary adrena lymphoma) <1% Metastases (most frequent : Breast, lung) 15%", 'role': 'assistant'}]