Supraomohyoid neck dissection.
D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000601:surgery; D005500:Follow-Up Studies; D006801:Humans; D008197:Lymph Node Excision / Q000379:methods*; D009062:Mouth Neoplasms / Q000601:surgery; D009333:Neck / Q000601:surgery; D037981:Neck Dissection