Only just seen this post. High PTH and High Serum Calcium levels are indicative of hyperparathyroidism, a condition where at least one of the 4 of the bodies parathyroid glands is excreting greater than normal levels of PTH.
Sqads description of the potential severity and likely treatment and monitoring of the disease sounds right to me.
The vast majority of such cases of PTH are caused by a parathyroid adenoma, a benign tumour.Any treatment plan would include the need for various scans to determine the size of the parathyroid glands. There may be a need for a surgical intervention to remove an enlarged gland, should it be deemed necessary.
I think you have already mentioned that someone has offered you a link to a webpage that you have found useful, so i may be replicating the same link - but the link below offers good background information and reassurance about this issue.
http://www.parathyroi...rathyroid-disease.htm