Materials and Methods
Study design: A Cross sectional retrospective study. The reporting
guideline is for an observational study.
Setting: Otolaryngology and Pathology Departments.
Participants: Patients who were diagnosed with LSCC and their clinical
and radiological neck lymph nodes status was N0 were included into our
study while patients had irresectable tumors (T4b) or comorbidities
interfering with surgery were excluded.