Before the reoperation (VATS thymectomy), laboratory findings showed elevated PTH (1,171 ng/L; reference range: 21.80 ng/L–87.5 ng/L) and hypercalcemia (13.4 mg/dL; reference range: 8.4 mg/dL–10.2 mg/dL). Here, PTH is linked to hypercalcemia disease.