[The prognosis of neck dissection with sternocleidomastoid muscle preservation and resection in advanced oral squamous cell carcinoma: a retrospective cohort analysis].

Purpose: To investigate the prognosis of advanced oral squamous cell carcinoma (AOSCC) patients undergoing neck dissection with sternocleidomastoid muscle (SCM) preservation and resection.

Methods: From January 2013 to June 2017, a total of 235 AOSCC patients(stage Ⅲ and stage Ⅳ) who were diagnosed and underwent neck dissection at the Department of Oral and Maxillofacial Surgery, College and Hospital of Stomatology, Guangxi Medical University, were collected and followed-up. The differences in overall survival（OS）, local recurrence-free survival (LRFS) and regional recurrence-free survival (RRFS) were compared between different surgical procedures.