[Combination of toxic multinodular goiter and primary hyperparathyroidism with rare ectopia of parathyroma].

A well-known feature of primary hyperparathyroidism (PHPT) is possible ectopic localization of parathyroid adenoma that can significantly complicate diagnostic process. Ectopia in the aortic window is extremely rare and accounts only 1% of ectopic parathyroid adenomas in the mediastinum and 0.24% among all parathyroid adenomas. Combination of multinodular toxic goiter and primary hyperparathyroidism with a rare variant of ectopia makes this observation very valuable from scientific and practical point of view.