PMC5786220_01
Extralaryngeal division of the left RLN was incidentally located at a mean distance of 7 cm from the left CTJ.
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Surgeons performed gradual dissection along with the tracheoesophageal groove until the RLN's entry in the larynx and unexpectedly identified that the extralaryngeal bifurcation point (ELBP) of the left RLN was located at a mean distance of 7 cm from the left CTJ (Fig. 1).