Hypercalcemia in Lung Cancer due to Simultaneously Elevated PTHrP and Ectopic Calcitriol Production: First Case Report

Table 1

Hypercalcemia of malignancy.

Tests	Calcitriol-mediated	Humoral hypercalcemia	Local osteolytic	Our patient
Serum PTH	Decreased	Decreased	Decreased	Decreased
Serum PTHrP	Undetectable	Increased	Undetectable	Increased
1,25-dihydroxyvitamin D	Increased	Decreased	Decreased	Increased
Phosphate	Normal/increased	Decreased	Normal	Decreased