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Tumor site
Level I Level II Level III Level IV Level V Retropharyngeal
Oral cavity
+
+
+
+
a
-
-
Oropharynx
-
+
+
+
-
+
b
Hypopharynx
c
-
+
+
+
-
-
Larynx
d
-
+
+
+
-
-
Nasopharynx
-
+
+
+
+
+
a
For tumors of the anterior tongue.
b
For tumors of the posterior pharyngeal wall.
c
Level VI for for esophageal extension.
d
Level VI for transglottic and subglottic tumors.
Selecting node level to include in the CTV in N0-1
Gregoire et al.
Radiother Oncol
2000; 56:135-50.
Eisbruch et al.
Semin Radiat Oncol
2002;12:2380-49.