Patients with mild hyperparathyroidism or hypercalcemia with a treatable cause do well and usually do not have complications.Patients with hypercalcemia due to conditions such as cancer or granulomatous disease may not do well, but this is usually due to the disease itself, rather than the hypercalcemia.ComplicationsGastrointestinalPancreatitisPeptic ulcer diseaseKidneyCalcium deposits in the kidn