A large percent of the lymph nodes of the body are concentrated in the neck. Embryologically the lymphatics are related to the veins, and the lymphatic pathways are closely associated with the veins.
The majority of cervical lymph nodes lie between the prevertebral fascia enclosing the spinal column and its supporting muscles, and the deep cervical fascia enclosing the sternocleidomastoid and trapezius muscles (see neck anatomy).
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The node-bearing areas of the neck are divided into surgical regions. Each region has a characteristic drainage pattern for structures in the head and neck (see differential diagnosis of neck masses).
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