FIGURE 4.

Overall survival of patients presenting with clinically T1‐2, N0 parotid mucoepidermoid carcinoma based on (A) elective neck dissection outcome, (B) absence or presence of one or more advanced pathological features (poorly differentiated, T3‐4a, positive lymph node(s), positive surgical margins, lymphovascular invasion, extracapsular extension), (C) whether elective neck dissection and adjuvant radiotherapy were utilized in patients with no advanced pathological features, (D) whether elective neck dissection and adjuvant radiotherapy were utilized in patent with one or more advanced pathological features [Color figure can be viewed at wileyonlinelibrary.com]