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Patterns of neck nodal metastasis
| Primary site | First echelon nodes |
| Oral cavity | Levels I, II, III |
| Larynx, Pharynx | Levels II, III, IV |
| Thyroid | Levels IV, VI, superior mediastinal |
| Parotid | Levels II, III, Pre-auricular, Peri & intra parotid, Upper accessory chain |
| Submandibular, sublingual glands | Level I, II, III |
