case 3 question 3

What is the most likely etiology of this patient’s abdominal pain given his recent medical history and labs?
Recurrent acute pancreatitis
Try again! Since the patient is abstinent from alcohol is less likely he has developed acute pancreatitis. His pain is not characteristic for pancreatitis and with a normal serum lipase, he does not meet 2 out of the 3 criteria on the revised Atlanta classification, to make a diagnosis of acute pancreatitis
Nephrolithiasis with calcium oxalate stones
Correct! Secondary hyperoxaluria and oxalate stones can occur in patients with fat malabsorption. This patient likely continues to have fat malabsorption as he is not taking his pancreatic enzyme replacement therapy appropriately. The fat in the intestinal lumen binds preferentially to calcium. This leaves  oxalate unbound as it enters the colon. The unbound oxalate is reabsorbed and enters into circulation and can form calcium oxalate stone
Peptic ulcer disease
Try again! Signs of peptic ulcer disease may include abdominal pain, dyspepsia, gastrointestinal bleeding or obstructive symptoms. This patient’s recent medical history does not put him at increased risk for developing peptic ulcer disease.

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