Primary hyperparathyreodism in dogs - the significance of parathyroidea sonography in 5 cases

This study is about five dogs with primary hyperparathyroidism. It was in a ll cases possible to make visible by ultrasonography the modified parathyro idea. The lesions were markedly more extensive than the parathyroideas of n ormal dogs. Their largest size was between 8.1 and 30 mm, in 4 cases the pa renchyma was anechoic, in one case inhomogeneous and strongly vasculated. T he diagnosis could be confirmed histologically in all cases, in 3 cases was an adenoma diagnosed, in the other two cases a carcinoma of the parathyroi dea. With some experience, the examination is relatively easily practicable and is particularly induced in dogs with hypercalcemia to differentiate be tween primary hyperparathyroidism and paraneoplastic hypercalcemia.