Operative Technique for Lateral Neck Dissection

Classification and Nomenclature

The National Comprehensive Cancer Network recommends that modern neck dissections be classified as either comprehensive or selective, with comprehensive neck dissection removing all lymph node groups and selective neck dissection targeting specific nodal levels based on common pathways of metastatic spread 1, 2

For N0 disease, the National Comprehensive Cancer Network recommends performing selective neck dissection including levels II-IV, with level VI added for infraglottic laryngeal and hypopharyngeal cancers, as H&N squamous cell cancer with N0 disease rarely presents with nodal metastasis beyond selective neck dissection bounds (<10% of cases) 2, 3, 4, 5
For N1-N2 disease, either selective or comprehensive neck dissection may be performed, though comprehensive dissection is generally preferred for therapeutic intent, as selective neck dissection may prevent morbidity and is appropriate in certain N1-N2 patients with low tumor burden 1, 2, 3, 4, 5
For N3 disease, comprehensive neck dissection is recommended 1, 2, 3, 4

Bilateral neck dissection is indicated for tumors at or near the midline and/or tumor sites with bilateral drainage (e.g., base of tongue, palate, supraglottic larynx, deep space pre-epiglottic involvement) 3, 4

For parotid malignancies requiring elective neck treatment, ipsilateral selective neck dissection of levels II-IV is recommended, with elective neck treatment offered over observation for T3-T4 tumors and high-grade malignancies 6

The neck dissection specimen should be oriented or sectioned to identify lymph node levels encompassed in the dissection, allowing accurate pathologic staging and determination of need for adjuvant therapy 2, 4, 5

Selective neck dissection should not be performed in patients with clinically evident nodal disease beyond N1-N2a, as these patients require comprehensive dissection 1, 2
Level VI dissection should not be omitted for infraglottic laryngeal cancers, as this level is frequently involved 2, 3, 4
Unilateral dissection should not be performed for midline tumors, as bilateral drainage mandates bilateral treatment 3, 4