Intrathyroidal parathyroid adenoma or hyperplasia. An occasionally overlooked cause of surgical failure in primary hyperparathyroidism
A. M. Spiegel, S. J. Marx, J. L. Doppman, R. M. Beazley, A. S. Ketcham, B. Kasten and G. D. Aurbach
In six surgically proved intrathyroidal parathyroid tumors, neither thyroid
scan nor gross appearance of the thyroid at surgery allowed reliable
detection of parathyroid glands wholly within the thyroid. Preoperative
selective catheterization of thyroid veins with radioimmunoassay for
parathyroid hormone facilitated successful removal of hyperfunctioning
intrathyroidal parathyroid tissue in all five cases in which it was
performed.