Modified radical neck dissection (MRND) is defined as the excision of all lymph nodes routinely removed in a radical neck dissection with preservation of one or more non lymphatic structures (SAN, IJV, SCM).

There are 3 main types of neck dissection surgery:

• Radical neck dissection. All the tissue on the side of the neck from the jawbone to the collarbone is removed. …
• Modified radical neck dissection. This is the most common type of neck dissection. …
• Selective neck dissection.