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Fig. 1 | BMC Surgery

Fig. 1

From: Is identification and dissection of the external laryngeal nerve necessary during thyroidectomy? A prospective study

Fig. 1

Friedman classification [3]. Type I: The EBSLN runs its whole course superficially or laterally to the IPC, descending with the superior thyroid vessels until it terminates in the CTM. Type II: the EBSLN penetrates the IPC about 1 cm proximal of the CTM. Type III: The EBSLN dives under the superior fibers of the IPC, remaining covered by this muscle throughout its course to the CTM

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BMC Surgery

ISSN: 1471-2482

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