This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
[{'content': 'Colonic pseudo-obstruction occurs in all, except: \nSelect and explain. \nA. Diabetes mellitus, B. Dermatomyositis, C. Scleroderma, D. Hyperthyroidism', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. (d) HyperthyroidismCauses of secondary pseudo-obstruction of colon: (Secondary pseudo-obstruction of colon is most common)* Neurological medications* Opiates* Myxedema (Hypothyroidism)* Hyper parathyroidism* Uremia* SLE* Scleroderma* Diabetes mellitus* Retroperitoneal hematoma* Parkinson's disease* Metabolic diseases.", 'role': 'assistant'}]