Other nasopharyngeal cysts include more lateral benign seromucinous retention cysts (Fig. 10), pharyngeal bursae of Luschka (between the longus colli muscle heads) and oncocytic cysts (Warthin's tumor, not reported in children).
Herniated Nucleus Pulposus. Definition. A herniated disc is a fragment of the disc nucleus which is pushed out of the outer disc margin, into the spinal canal through a tear or rupture.. In the herniated disc's new position, it presses on spinal nerves, producing pain down the accompanying leg. This produces a sharp, severe pain down the entire leg and into the foot.
A bulging disk is different from a herniated disk in that a bulging disk typically occurs gradually over time rather than suddenly. A herniated disk is often the result of an injury or trauma to the spine. In the majority of patients who experience a bulging disk, there is no pain unless the disk becomes herniated or protrudes into a nerve. In many cases, a bulging disk may be diagnosed as a condition secondary to another problem.