This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
[{'content': 'False about Factitious thyrotoxicosis? \nSelect and explain. \nA. Seen in nurses, B. Features of thyrotoxicosis, C. Radionuclide uptake is high, D. All are true', 'role': 'user'}, {'content': "Answer: C \nExplanation: In factitious illnesses, the patient consciously and voluntarily produces physical symptoms of illness. Diagnosis of Graves' disease is straightforward in a patient with biochemically confirmed thyrotoxicosis, diffuse goiter on palpation, ophthalmopathy, and often a personal or family history of autoimmune disorders. For patients with thyrotoxicosis who lack these features, the diagnosis is generally established by a radionuclide (99mTc, 123I, or 131I) scan and uptake of the thyroid, which will distinguish the diffuse, high uptake of Graves' disease from destructive thyroiditis, ectopic thyroid tissue, and factitious thyrotoxicosis.Ref: Harrison&;s Principles of Internal Medicine; 19th edition; Chapter 405 Disorders of the Thyroid Gland; Page no: 2295", 'role': 'assistant'}]