This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
All are associated with pituitary apoplexy except- 
Select and explain. 
A. Hypehyroidism, B. Diabetes mellitus, C. Sickle cell anemia, D. Hypeension
A: Hypehyroidism
Answer: A: Hypehyroidism 
Explanation: Pituitary apoplexy is a medical emergebct. It is caused by either a bleed into and/or death of an area of tissue in the pituitary gland. It is usually associated with the presence of a pituitary tumour. Pituitary apoplexy can be caused by bleeding into the pituitary or by blocked blood flow to the pituitary. Apoplexy means bleeding into an organ or loss of blood flow to an organ. Pituitary apoplexy is commonly caused by bleeding inside a noncancerous (benign) tumor of the pituitary. Risk factors for pitutary apolexy Ref - pubmed.com , <a href="