A 50 year old man with DM suddenly develops persistent crushing central chest pain radiating to the neck. What is the single most appropriate diagnosis?

The key is C. Dissecting aortic aneurism. Probably wrong key. Correct key should be D. MI. [The features described is insufficient and can be seen in both aortic dissection and MI. However dissection

pain is described as tearing and crushing pain is often used for mi pain. Both dissection and mi can have

pain radiation to neck. History of diabetes goes with mi as it is a recognized risk factor for mi. Some may argue in DM mi will be painless! But it is not always the case. MI is only painless when autonomic neuropathy becomes well established].