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Pre-operative localization of parathyroid adenomas or parathyroid hyperplasia by means of venous sampling.

Pre-operative localization of parathyroid tumours on primary hyperparathyroidism is discussed. 20 patients were examined in this way. Of the 15 patients who were operated on, the pre-operative findings of 12 correspond with the results of operations and histological examinations. These results correspond with what is known from other publications. Preoperative localization by means of venous sampling is possible in a large number of cases. The examination is especially important in patients with previous neck exploration.