PTHrP-mediated hypercalcemia in metastatic adrenocortical carcinoma mimicking pheochromocytoma: a diagnostic challenge.
Humoral hypercalcemia of malignancy is a paraneoplastic syndrome mediated by parathyroid hormone-related peptide (PTHrP). Adrenal masses may present a diagnostic challenge when clinical, biochemical, and imaging findings overlap with endocrine tumors such as pheochromocytoma. We report an 80-year-old man presenting wit...