During the past 3 years (June, 1974, to July, 1977), 51 @entity1 underwent reoperation for persistent or recurrent @entity2742 at the Mayo Clinica. The overall success rate for cervical reoperation was 72% and for mediastinal reoperation, was 64%. Arteriography alone provided accurate preoperative localization of missing @entity3243 in 11 of 17 @entity1 at a cost per @entity1 benefited of approximately  1,700. Selective thyroid venous sampling with @entity6685 assay alone correctly lateralized hyperfunctioning glands in only four of nine @entity1 at a cost per @entity1 benefited of approximately  1,900. When used in combination, these studies provided correct localization or lateralization of @entity3243 in five of seven @entity1 at a cost per @entity1 benefited of approximately  2,000. Three @entity1 experienced significant @entity16 as a result of thyrocervical arteriography. There were no complications due to venous sampling. In @entity1 who has undergone a less than thorough initial explorations due to venous sampling. In @entity1 who had undergone a less than thorough initial exploration of the neck, the success rate for reoperation was not enhanced by obtaining preoperative @entity5 localization studies. However, in those @entity1 who had had a thorough and systematic exploration of the neck at their first operations, the success rate for reoperation was almost doubled when preoperative arteriography or venous sampling (or both) was employed.

Results of reoperation for XXXX , with evaluation of preoperative localization studies.

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity6685 :: ('MESH:D010281', 'Chemical') :: ['parathormone'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity16 :: ('MESH:D009422', 'Disease') :: ['neurological complications'] @entity3243 :: ('MESH:D010282', 'Disease') :: ['parathyroid tumors'] @entity2742 :: ('MESH:D006961', 'Disease') :: ['hyperparathyroidism']
@entity2742 :: (MESH:D006961,Disease) :: ['hyperparathyroidism']
