Preoperative Evaluation of Substernal Goiter by Computed Tomography in the Extended Neck Position.

Sternotomy is indicated when a goiter cannot be resected via a cervical incision, such as in the case of a substernal goiter extending beyond the aortic arch. In this article, we report a case of a large substernal goiter that was successfully removed using the cervical approach only. This is a case of a 68-year-old woman, diagnosed with goiter 20 years ago, who complained of a neck mass enlargement with associated cough. Pathological examination revealed no malignancy. Computed tomography (CT) scan showed an 11-cm thyroid mass reaching the level of the aortic arch. Preoperatively, we evaluated the substernal extent of the goiter via CT in the extended neck position to decide whether sternotomy was necessary. With the patient's neck extended, the goiter withdraws cranially above the aortic arch. The mass was then removed via the cervical approach without sternotomy. Preoperative CT in the extended neck position was thus deemed helpful in deciding whether or not sternotomy was required.