Medial Approach for the Resection of Goiters with Suprahyoid, Retropharyngeal, or Substernal Extension.

Background: Resection of massive goiters with suprahyoid, retropharyngeal, and substernal extension may not be amenable to standard approaches. This study evaluates a surgical approach allowing resection of massive goiters with minimal substernal and deep neck dissection.

Methods: Cases of thyroidectomy for goiters with substernal, retropharyngeal, or suprahyoid extension at a single institution from 2006 to 2017 were reviewed. The technique involves initial complete division of the medial thyroid tracheal attachments after identification of the RLN medial-inferiorly or superiorly. Deep components are then delivered into the superficial paratracheal region of the neck.

Results: Sixty patients were included, 46 of which had substernal and 14 had only suprahyoid or retropharyngeal extension. Mean substernal extension was 3.7 cm (range 1.5-7.5 cm). The medial approach was successful in identifying the RLN in 70 (83%) of 84 goiter sides (71% medial-inferiorly and 29% superiorly). Standard inferior/lateral approaches were used in 12 (14%) nerves or not found until after goiter removal in 2 (2.5%). No patients required sternotomy or tracheotomy. Complications included postoperative seroma/hematoma (n = 9, 15%) with one re-exploration, transient RLN injury (n = 4, 4% of all lobectomies), transient hypocalcemia (n = 6, 16% of total thyroidectomies), permanent hypocalcemia (n = 2, 5% of total thyroidectomies), and permanent RLN paralysis (n = 1, 1% of all lobectomies).

Conclusion: Large suprahyoid, retropharyngeal, and substernal goiters were resected transcervically with low morbidity. Early complete division of Berry's ligament after medial-inferior RLN identification was achieved in a high proportion of patients, facilitating goiter delivery with minimal mediastinal and deep neck dissection.