Cardiopulmonary
The cardiopulmonary region has referral patterns to the abdominal region, therefore, it is imperative to differentiate the causes of the patient's signs and symptoms. These include myocardial infarction, abdominal aortic aneurysm, and pneumonia.
Image provided by: http://www.pchonline.org/photogallery/Cardiopulmonary-Services.aspx