ocr: Level ofLymph Node Classification Removed I. Standard radical dissection I, II, III, IV, II. Modified radical neck dissection I, II, III, IV, III. Modified neck dissection A. Functional neck dissection II, III, IV,V(+I) B. - Selective neck dissection 1. Submandibular triangle dissection IB 2. Suprahyoid of neck dissection IA, IB 3. - Arterior neck dissection IIA, III, IVA 4. Posterior neck dissection IIB, V IV. Extended neck dissection
