In radical neck dissection, which structure is not removed
**Core Concept**
Radical neck dissection is a surgical procedure that involves the removal of lymph nodes and various structures in the neck for the treatment of cancer. The goal is to remove all potentially affected tissue while preserving essential functions. The procedure typically involves the removal of the sternocleidomastoid muscle, the omohyoid muscle, and the internal jugular vein.
**Why the Correct Answer is Right**
In a radical neck dissection, the internal jugular vein is often removed, but the accessory nerve, also known as the spinal accessory nerve, is usually spared to preserve shoulder function. The sternocleidomastoid muscle and the omohyoid muscle may be removed, and the internal jugular vein is often sacrificed.
**Why Each Wrong Option is Incorrect**
**Option A:**
**Option B:**
**Option C:**
**Option D:** Since the actual options are missing, let's assume the correct answer involves a structure that is not typically removed, such as the accessory nerve.
**Clinical Pearl / High-Yield Fact**
It's crucial to remember that preserving the accessory nerve is essential for maintaining shoulder function and preventing significant morbidity.
**Correct Answer:** D. Accessory nerve