[Severe hypercalcemia due to renal transitional cell carcinoma].

Hypercalcemia is a common metabolic disorder, especially in the elderly. The most common etiologies are hyperparathyroidism or malignancy, most often of the lung, breast, kidney or hematological system. Because hypercalcemia is an uncommon manifestation in urinary tract epithelial tumors, especially those of the renal pelvis, we present a man aged 62 years with hypercalcemia due to renal transitional cell carcinoma.