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.
Herniated disk. A herniated disk refers to a problem with one of the rubbery cushions (disks) between the individual bones (vertebrae) that stack up to make your spine.A spinal disk is a little like a jelly donut, with a softer center encased within a tougher exterior.Sometimes called a slipped disk or a ruptured disk, a herniated disk occurs when some of the softer jelly pushes out through a crack in the tougher exterior.erniated disk. A herniated disk refers to a problem with one of the rubbery cushions (disks) between the individual bones (vertebrae) that stack up to make your spine.