Posterior triangle of the neck which divides the space into two triangles: A) Nerves and plexuses: B) Vessels: C) Lymph nodes: D) Muscles: The accessory nerve (CN XI) is particularly vulnerable to damage during lymph node biopsy. Damage results in an inability to shrug the shoulders or raise the arm above the head, particularly due to compromised trapezius muscle innervation. The Internal jugular vein's superficial location within the posterior triangle also makes it vulnerable to injury. Posterior triangle of the neck The posterior triangle (or lateral cervical region) is a region of the neck. It has the following boundaries: Apex: Union of the sternocleidomastoid and
Head and Neck Cancer Alliance day are 20 times more likely to develop head and neck cancer in comparison to non-drinkers. Some symptoms of head and neck cancer are soreness of the throat, difficulty in jaw movement or swallowing, and the presence of a nodule or lump. The stage of the disease is a determining factor in deciding the prognosis of head and neck cancer. There is a correlation between disease stage, survival and quality of life. The median five-year survival drops significantly from about 80% with the presence of regional or distant metastasis. Nearly 8000 people die every year due to head and neck