parathyroid tumor diagnosisthyroid and parathyroid cancerparathyroid tumor surgeryparathyroid cancer prognosisbenign parathyroid tumorparathyroid tumors in dogsparathyroid gland cancerhyperparathyroidism tumorparathyroid malignancyparathyroid adenocarcinomaparathyroid carcinoma treatmentparathyroid neoplasm