1. A neck dissection is a surgical procedure to remove lymph nodes and surrounding tissue in the neck to treat cancer that has spread from areas like the oral cavity or larynx. 2. There are different types of neck dissections classified based on the extent of lymph nodes and structures removed, including radical, modified radical, and selective neck dissections. 3. The specific type of neck dissection performed depends on factors like the location and stage of the cancer, and whether preservation of structures like the spinal accessory nerve or internal jugular vein is needed.

1. Neck Dissection RAKSHITH AVB

2. Definition It is a procedure to remove lymph nodes and surrounding fibro fatty tissues from neck to eradicate metastasis to cervical lymph nodes in cancer of aerodigestive tract.

23. Common Nodal Drainage Patterns Face and Scalp Anterior Facial, Ib Lateral Parotid Posterior Occipital, V Eyelids Medial Ib Lateral Parotid, II Chin Ia, Ib, II External Ear Anterior Parotid, II Posterior Post auricular, II, V Middle Ear Parotid, II Floor of mouth Anterior Ia, Ib, IIa > IIb Lower incisors Ia, Ib, IIa > IIb Lateral Ib, IIa > IIb , III Teeth except incisors Ib, IIa > IIb , III Nasal Cavity Anterior Ib Posterior Retropharyngeal, II, V

24. Common Nodal Drainage Patterns Nasal Cavity Posterior Retropharyngeal, II, V Nasopharynx Retropharyngeal, II, III, V Oropharynx IIb > IIa, III, IV, V Larynx Supraglottic IIa > IIb, III, IV Subglottic VI, IV Cervical esophagus IV, VI Thyroid VI, IV, V, Mediastinal Tongue Tip Ia, Ib, IIa > IIb, III, IV Lateral Ib, IIa > IIb, III, IV

47. Y Incision

48. McFee Incision

49. H Incision

50. J Incision