Background: The present study analyzed the impact of margin status on local control and survival, and the management of close/positive margins after transoral CO2 laser microsurgery for early glottic carcinoma. Methods: 351 patients (328 males, 23 females, mean age 65.6 years) underwent surgery. We identified the following margin statuses: negative, close superficial (CS), close deep (CD), positive single superficial (SS), positive multiple superficial (MS), and positive deep (DEEP). Results: A total of 286 patients (81.5%) had negative margins, 23 (6.5%) had close margins (8 CS, 15 CD) and 42 (12%) had positive margins (16 SS, 9 MS, 17 DEEP). Among the 65 patients with close/positive margins, 44 patients underwent enlargement, 6 radiotherapy and 15 follow-up. Twenty-two patients (6.3%) recurred. Patients with DEEP or CD margins showed a higher risk of recurrence (hazard ratios of 2.863 and 2.537, respectively), compared to patients with negative margins. Local control with laser alone, overall laryngeal preservation and disease-specific survival decreased significantly in patients with DEEP margins (57.5%, 86.9% and 92.9%, p < 0.05). Conclusions: Patients with CS or SS margins could be safely submitted to follow-up. In the case of CD and MS margins, any additional treatment should be discussed with the patient. In the case of DEEP margin, additional treatment is always recommended.
The most common surgical risk after total thyroidectomy remains the recurrent laryngeal nerve (RLN) injury. Nowadays, the use of intraoperative nerve monitoring systems (IONM) such as the endotracheal tube‐based is recommended to prevent RLN palsy. The use of the nerve monitoring is standardized by dedicated guidelines on the basis of a normal laryngeal anatomy, but previous head and neck surgical procedures may complicate its application. The authors herewith present a case of a non‐conventional use of endotracheal tube‐based IONM in a 72‐year‐old patient who underwent to a second‐stage total thyroidectomy for metastatic papillary cancer incidentally detected after an open partial horizontal laryngectomy (OPHL) extended to one arytenoid (Type IIa + ary left) for squamous cell carcinoma. The use of the endotracheal tube‐based IONM in such particular case where the function of the only remaining arytenoid had to be absolutely preserved was effective in avoiding the RLN accidental injury. The authors reviewed the non‐traditional use of IONM and described the procedure in case of thyroidectomy in patients previously treated by OPHL.