21. In patients with multiglandular parathyroid disease, imaging is not as reliable. 22. Each parathyroid vein drains into the superior, middle and inferior thyroid veins. 23. Parathyroid hormone has effects antagonistic to those of calcitonin.24. In the parathyroids , magnesium serves this role in stimulus-secretion coupling. 25. Parathyroid adenomas are very rarely detectable on clinical examination.26. The normal glands respond by secreting parathyroid hormone at a persistently high rate. 27. Less commonly it may be due to double parathyroid adenomas or parathyroid hyperplasia. 28. Less commonly it may be due to double parathyroid adenomas or parathyroid hyperplasia. 29. It experiences especially high expression in the parathyroid gland. 30. It's called parathyroid hormone related peptide.
