Mary is 55 years old and for the past three months complains "i feel like my heart is twisting when i walk"  Her EKG is normal, only significant blood word was elevated creatinine.  Yesterday she went to the ER with chest pain, but released and told to take antidepressants.  Today her family doctor did an ultrasound and noted her pancreas was extremely painful when he pressed on it.  However, the pain did not radiate to her back.  What do you think she has? What tests should be ordered?