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Clinical Regions of the Head and Heck
| Region | Nodal Group |
|---|---|
| Ia | Submental |
| Ib | Submandibular |
| IIa | (Anterior) Upper Jugular |
| IIb | (Posterior) Upper Jugular |
| III | Middle Jugular |
| IV | Lower Jugular |
| Va | (Upper) Posterior Triangle |
| Vb | (Lower) Posterior Triangle |
| VI | Anterior Compartment |
| P | Parotid |
| B | Buccal |
| RP | Retropharyngeal |
