The lymph nodes in the neck are collectively called cervical lymph nodes, and there are roughly 300 of them on each side. They’re organized into a standardized system of levels, numbered I through VII, each with its own common name based on location. Understanding these groups helps make sense of what a doctor means when they mention a specific node location on an imaging report or during an exam.
The Seven Levels of Cervical Lymph Nodes
Surgeons and radiologists classify neck lymph nodes into numbered levels based on their position relative to key landmarks like the jawbone, the hyoid bone (a small bone at the base of the tongue), and the collarbone. Each level also has an older, more descriptive common name.
Level I: Submental and Submandibular Nodes. These sit beneath the chin and along the underside of the jaw. Level IA nodes (submental) are the small cluster right under the chin, between the two sides of the jaw. Level IB nodes (submandibular) sit just behind and below the submandibular salivary gland. These drain the floor of the mouth, the lower lip, and the front of the tongue.
Level II: Upper Jugular Nodes. These run along the upper portion of the large jugular vein, from the base of the skull down to the hyoid bone. They’re tucked behind and beneath the large muscle that runs diagonally along the side of your neck (the sternocleidomastoid). Level IIA nodes sit close to the jugular vein itself, while Level IIB nodes are positioned slightly behind it, separated by a thin layer of fat. These are some of the most commonly swollen nodes people notice, since they sit high on the neck just below the ear.
Level III: Middle Jugular Nodes. Continuing down the jugular chain, Level III nodes occupy the middle third of the neck, running from the hyoid bone down to the lower edge of the cricoid cartilage (the ring of cartilage you can feel at the base of your voice box).
Level IV: Lower Jugular Nodes. These extend from the cricoid cartilage down to the collarbone. Together, Levels II, III, and IV form a continuous chain along the jugular vein and are sometimes referred to collectively as the “jugular chain” nodes.
Level V: Posterior Triangle Nodes. These are located in the back portion of the neck, behind the sternocleidomastoid muscle. They include what were previously called the spinal accessory nodes and the transverse cervical nodes. If you tilt your head and feel the area between the back edge of that diagonal neck muscle and the trapezius muscle at the back of your shoulder, that’s the posterior triangle.
Level VI: Anterior Compartment Nodes. These sit in the front-center of the neck, between the two carotid arteries, spanning from the hyoid bone down to the top of the breastbone. This group includes several smaller chains with specific names: pretracheal, paratracheal, prelaryngeal, and perithyroidal nodes. They are closely associated with the thyroid gland, larynx, and trachea.
Level VII: Superior Mediastinal Nodes. Technically extending below the top of the breastbone into the upper chest, these are the deepest cervical nodes. They include the esophageal groove and lower paratracheal nodes. Level VII nodes aren’t palpable during a physical exam and are only visible on imaging.
Other Named Node Groups in the Neck
A few important node groups don’t fit neatly into the level system. Supraclavicular nodes sit in the hollow just above the collarbone. On imaging, any node found at or below the point where the collarbone appears on a scan is classified as supraclavicular rather than Level IV. Retropharyngeal nodes are a small group nestled behind the throat, near the base of the skull. Occipital nodes are found at the back of the head where the skull meets the neck, and preauricular and postauricular nodes sit just in front of and behind the ear.
What Normal Neck Nodes Feel Like
Most cervical lymph nodes are too small to feel. When they are palpable, healthy nodes are typically soft, smooth, and move freely under the skin when you press on them. They’re usually smaller than a centimeter across, roughly the size of a pea or a small bean.
Size thresholds vary by location. Nodes in Levels I and II are naturally a bit larger, so radiologists generally consider them abnormal when they exceed about 1.5 cm in greatest diameter. In all other levels, nodes over 1.0 cm raise concern. Retropharyngeal nodes are smaller still, with anything over 6 to 8 mm considered worth investigating.
Characteristics That Distinguish Harmless From Concerning Nodes
A swollen node from a cold or sore throat is the most common reason people notice their cervical lymph nodes. Infected nodes are usually tender to the touch, soft or slightly firm, and they shrink back to normal within a few weeks once the infection resolves.
Certain features suggest something other than a routine infection. Hard, painless nodes that feel fixed in place (not sliding under your fingers) can indicate malignancy or a chronic granulomatous infection. A rubbery consistency is classically associated with lymphoma. Nodes that feel matted together, as if several have fused into a single clump, also warrant closer evaluation.
Location matters too. Supraclavicular nodes are rarely swollen from simple infections. In both adults and children, a palpable supraclavicular node carries a high risk of being linked to an underlying malignancy, particularly cancers originating in the chest or abdomen. Other features that raise the concern for malignancy include nodes that persist for more than four to six weeks, nodes that haven’t returned to their baseline size after eight to twelve weeks, and swelling accompanied by systemic symptoms like drenching night sweats, unexplained weight loss of more than 10% of body weight, or persistent fevers.
Why Doctors Use the Level System
The level system exists because the location of an enlarged node provides strong clues about where a problem might originate. Cancers of the mouth and lips tend to spread first to Level I and II nodes. Thyroid cancers typically involve Level VI nodes. Cancers from below the collarbone, like lung or stomach cancer, often show up first in supraclavicular nodes, particularly on the left side (sometimes called a Virchow node).
If you see a reference to “Level IIB lymphadenopathy” or “Level IV node” on a scan report, the number simply tells your doctor where in the neck the node sits, which helps narrow down the possible causes and guides any further workup. The naming system is a shared language that ensures precision across radiology reports, surgical planning, and follow-up imaging.