Bilateral Elective Neck Dissection in Salvage Total Laryngectomy

Inclusion criteria -patients affected by recurrent laryngeal cancer after primary treatment failure (surgery or radiotherapy or chemoradiotherapy), with no clinical or radiological evidence of lymph node metastasis in the neck (cN0),who underwent salvage total laryngectomy and concomitant bilateral elective neck dissection (levels II, III, IV and VI). Exclusion Criteria: * patients who received other salvage laryngeal resection such as open partial horizontal laryngectomy, endoscopic partial laryngectomy, or who did not undergo bilateral selective neck dissection.