Morbidity Associated With Surgical Removal of Substernal Thyroid Goiters.

Surgical excision of substernal thyroid goiters (STG) can be challenging while minimizing postoperative morbidity. Postoperative complication rates associated with transcervical and transthoracic approaches (i.e., partial or total sternotomy) for STG compared to multinodular goiters (MNG) limited to the neck (i.e., non-substernal) remains unclear. This study examines postoperative morbidity related to surgical approaches in the removal of STG and MNG. A retrospective review of prospectively collected data of 988 patients with STG and non-substernal MNG from a single institution between 2010 and 2021 was performed. Patients were stratified by STG and conventional non-substernal MNG limited to the neck excised by transcervical and transthoracic approach. Postoperative complications including neck hematoma requiring return to the operating room, permanent recurrent laryngeal nerve injury and hypocalcemia, and transient or temporary recurrent laryngeal nerve injury and hypocalcemia were identified. Demographics including age, sex, and race, among others, were analyzed. Of the 988 cases, there were 887 (90%) MNG and 101 (10%) STG. Of the STG cohort, 11 (11%) required a partial sternotomy and 4 (4%) required a total sternotomy. Permanent complication rates for non-substernal MNG and STG patients were 1.5% and 0.9%, respectively. Only transient or temporary hypocalcemia rates were statistically different between the STG and MNG cohorts (9.9% versus 3.8%, P < 0.001). Regardless of transcervical or transthoracic approach, postoperative complications associated with the surgical removal of STG are low in the hands of experienced, high-volume thyroid surgeons.

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