Neck Cancer & Lymphatic Clearance Surgery.

A neck dissection is a surgical procedure to clear the lymph nodes in the neck that contain or are at high risk of containing cancer cells. It is required for patients with confirmed neck node metastasis (often seen as a hard swelling on neck scans or confirmed via biopsy/FNAC) or as an elective (preventative) measure for certain deep oral tumors (e.g. tongue cancers deeper than 4mm) where micro-metastasis is likely.

With modern selective and modified radical neck dissections, critical structural landmarks—particularly the spinal accessory nerve—are carefully preserved. This minimizes nerve damage and allows patients to retain normal shoulder elevation. While temporary stiffness and tightness on the side of the neck are common due to healing tissues, early physical therapy exercises completely restore mobility in most patients.

The lymph nodes in the neck are divided into five anatomical levels (I-V) to guide surgical clearance: Level I (Submental & Submandibular): Located under the chin and jawline; these are the primary draining nodes for oral cavity cancers. Level II, III & IV (Upper, Middle & Lower Jugular): Positioned along the internal jugular vein on the side of the neck; these frequently receive drainage from tongue and throat cancers. Level V (Posterior Triangle): Located in the back of the neck; cleared in comprehensive neck dissections. Categorizing the nodes into levels allows the surgeon to perform a selective neck dissection, clearing only the levels at risk while preserving critical nerve and vascular structures in unaffected zones.