Abstract
Gelfoam embolization of parathyroid adenomas causes temporary remission of hypercalcemia, but collateral circulation revascularizes the gland. Embolization with silicone permanently infarcts the gland, but is associated with all the risks of capillary bed occlusion. The staining of parathyroid adenomas with contrast material avoids the risks of particulate embolization and appears to produce permanent ablation. We carried out embolization or staining procedures in 14 parathyroid adenomas. In three of the four cases in which Gelfoam embolization was performed, hypercalcemia recurred within six months to two years; in the fourth case, in which persistent normocalcemia has been found, intense staining had been demonstrated before embolization. In eight of the remaining 10 cases, adequate staining was achieved, and normocalcemia has been maintained in all up to 36 months.
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