Differential diagnosis

• myocardial infarction
• aortic regurgitation
• thoracic non-dissecting aneurysm
• musculoskeletal pain
• mediastinal cyst or tumour
• pericarditis
• gallstones
• pleuritis
• pulmonary embolism 

Why?

Myocardial infarction and aortic regurgitation are possible alternatives

Differential diagnosis in patients having an angiogram c	% (95% CI)
myocardial infarction	5.1% (1.9% to 8.6%)
aortic regurgitation	2.8% (0.4% to 5.3%)
thoracic non-dissecting aneurysm	2.2% (0.1% to 4.4%)
musculoskeletal pain	2.2% (0.1% to 4.4%)
mediastinal cyst or tumour	2.2% (0.1% to 4.4%)
pericarditis	1.7% (0.0% to 3.6%)
gallstones	1.1% (0.0% to 2.7%)
pleuritis	0.6% (0.0% to 1.7%)
pulmonary embolism	0.6% (0.0% to 1.7%)
unknown	8.0% (4.0% to 12%)