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What is Which structure is preserved during modified radical neck dissection? and explain in detail?
Sternocleidomastoid muscle is preserved during modified radical neck dissection. Radical Neck Dissection Modified Radical Neck Dissection Removal of lymph nodes I-V + spinal accessory nerve + internal jugular vein + sternocleidomastoid muscleQ Removal of level I-V lymph nodes with (Mnemonic: SISm): Type I: preserves only Spinal accessory nerveQ Type II: preserves both spinal accessory nerve and Internal jugular veinQ Type III: preserves spinal accessory nerve, internal jugular vein and Sternocleidomastoid muscleQ(Functional neck dissectionQ)