PTH and hypercalcemia disease: Biological tests revealed corrected hypercalcemia at 2.77 mmol/L, hypophosphatemia at 0.82 mmol/L, calcemia/phosphoremia ratio is 3.37, elevated alkaline phosphatase up to 30 times the normal level, elevated PTH at 1871 pg/mL, and a deficiency in 25‐hydroxyvitamin D3 (25‐(OH)‐D) at 10.8 ng/mL.