Table 4.

The contribution of intraoperative nerve monitorization to the preservation of the RLN and EBSLN

Visual identification of the RLN

Determination of anatomical variations of the RLN

Extralaryngeal branching of the RLN

Non-recurrent laryngeal nerve

Variation in the course of the RLN

Intraoperative detection of RLN injury

Prevention of bilateral vocal cord paralysis

Preservation of the nerve in patients with preoperative vocal cord paralysis

Detection, confirmation, and preservation of the EBSLN, and dissection of the upper pole

EBSLN: External branch of the superior laryngeal nerve; RLN: Recurrent laryngeal nerve.