Endocrine Abstracts

Introduction: Atypical parathyroid tumour (APT) is a rare cause of primary hyperparathyroidism (PHPT) with a frequency of 1.2-1.3%. APT is a lesion with suspicious clinical and histological features of malignancy which does not completely respect the World Health Organization (WHO) criteria for diagnosis of Parathyroid Carcinoma (PC). There is a well-known association with PHT and medullary thyroid carcinoma for multiple endocrine neoplasia. However, concurrence of thyroid pap...