A patient you have treated for several years has a past medi…
A patient you have treated for several years has a past medical history of Sjogren’s and repeated episodes of nephrolithiasis. She presents today with hematuria and states she thinks she passed a stone during the night. She denies any other complaints. You decide to order a UA and a BMP, which returns with a urine pH of 7.0, serum potassium level is 3.2 and hypercalcemic. What is the likely cause of her repeated nephrolithiasis?