Completion thyroidectomy and lateral neck dissection revealed adhesions in the lateral neck compartment after gasless transaxillary endoscopic thyroidectomy: a case report.
Background
Endoscopic thyroidectomy is effective and safe surgical option for thyroid surgery while providing satisfactory cosmetic results. Gasless transaxillary endoscopic approaches have been reported to achieve endoscopic thyroidectomy in our center.


Case Description
We present a patient who previously underwent gasless transaxillary endoscopic lobectomy with ipsilateral central neck dissection who underwent open completion thyroidectomy and lateral neck dissection (LND) (reoperation) in our center. The ultrasound test before the first treatment did not reveal abnormal lymph nodes in the central and lateral neck compartments. Further evaluation of the neck lymph nodes was not performed. Meanwhile, this patient did not participate in the originally planned follow-up at the 3- and 6-month visits. At the one-year visit, imaging tests revealed enlarged and suspicious malignant lymph nodes in levels III and IV of the lateral neck compartments. We believed that reoperation was performed for persistent, rather than truly recurrent disease for this patient. During the second surgery, we found that the surface of internal jugular vein (IJV) was significantly adhered to the surrounding fibroadipose tissue and the omohyoid muscle was adhered to the IJV. After carefully dissected the IJV, the dissection of the lateral neck compartment had been performed successfully.


Conclusions
Exposure of the lateral neck compartment in the gasless transaxillary procedure, especially exposure of the IJV, causes adhesions of the lateral neck compartment and brings difficulties for possible future LND. Gasless transaxillary endoscopic thyroid surgery should be performed in strictly selected patients with adequate preoperative assessment. The IJV should be carefully dissected to avoid IJV injury, and the lateral neck compartment could be dissected successfully during reoperation.