A 32 year old woman presents to the emergency room with severe epigastric and rightupper quadrant pain 3 hours after eating a large cheeseburger. The pain occasionally
radiates to her right flank and right back. She has a low grade temperature and is tender to
palpation in the right upper quadrant of the abdomen. Her lab tests are as follows:
ALT: 44 U/l
AST: 25 U/l
Total bilirubin: 1.3 mg/dl
Alkaline phosphatase: 100 U/l
White blood cell count: 14, 500
Amylase: 67 U/l
Lipase: 55 U/l
The most likely explanation for this patient’s symptoms is:
