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
Hypothyroidism with increased TSH level is seen in All Except 
Select and explain. 
A. Sheehan's syndrome, B. Lithium carbonate therapy, C. Post radioiodine ablation, D. Endemic goitre
A: Sheehan's syndrome
Answer: A: Sheehan's syndrome 
Explanation: Sheehan’s syndrome causes hypopituitarism leading to decreased TSH.