the relation between circulating 1,25-dihydroxyvitamin d ( 1,25 ( oh ) 2d ) levels and intestinal calcium absorption -- as determined by an oral calcium load test -- was studied in 16 patients with hypercalcaemia of malignancy ( hm ) and 16 with hypercalcaemic primary parathyroidism ( hpt ) .
C0149911
hypercalcaemia of malignancy
C0020437
hypercalcaemic