Radiology Cases Hyperparathyroidism LSBU

Description: Put simply, the effect of the parathyroid hormone is to maintain or elevate the serum free calcium. Calcium will be mobilised from whatever source is possible, increasing resorption from bowel and renal tubules. Decreased resorption of phosphate, with a potential reduction in the calcium phosphate solubility product, will also help mobilise Calcium from the bones. The presence of Vitamin D. is necessary for the hormone to have its full effect upon the bone (and gut). Thus the patterns of primary and secondary hyperparathyroidism will be different. In the primary condition there is absorption of the tufts of the terminal phalanges in the hands and feet and subperiosteal bone resorption with particular effect at the level of the bone metaphysis.