[High ectopia of a parathyroid adenomas of the "parathymus". 2 cases].

The third brachial pouch gives rise to the thymus and antero-inferior part of the parathyroid gland (P3). A P3 gland can develop in any region of the migration pathway of the thymus from the angle of the jaw to the pericardium. Rare high ectopia of a parathyroid adenoma of the "parathymus" was detected in two patients during repeat operations for primary hyperparathyroidism.