PTH and adenocarcinoma: The postoperative paraffin pathological diagnosis revealed adenocarcinoma of parathyroid (Fig. 2, A&B)and the level of serum parathormone (PTH), Ca and P showed no abnormality (PTH 66.1 pg per milliliter, Ca 2.31 mmol per liter, P 1.17 mmol per liter).