the authors studied intraarterial digital subtraction angiography ( dsa ) , conventional selective angiography , parathyroid venous sampling ( pvs ) , and intraoperative ultrasound ( us ) as localization procedures for parathyroid adenomas in 53 patients with proved parathyroid adenomas and previous unsuccessful parathyroid surgery .
C0262587
parathyroid adenomas
C0030518
parathyroid