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.
last reviewed june 16 2016 a disc herniation is a damage of a cartilaginous disc in the spine in which a part of a disc protrudes out a herniated disc can pinch a root of a spinal nerve and cause pain in the neck arm lower back or leg medical terms intervertebral between vertebra