[Two anatomical observations of a non-recurrent laryngeal nerve (author's transl)]

2 cases are described of a right recurrent nerve with abnormal origin and path. Frequency: 0,8%. Both cases ware associated with the presence of an A. lusoria. In the first case, the "non-recurrent" recurrent nerve reached the thyroid gland by its superior pole, in the second case by its inferior pole. In the latter case, there was a close relation between the nerve and the branches of the inferior thyroid artery. The consequences are discussed in relation to the surgical techniques.