Thornwaldt cysts are developmental benign cysts that present in the midline within the nasopharynx. There is a persistent communication between the roof of the nasopharynx and the notochord.
What causes a Thornwaldt cyst?
The symptoms usually appear when there is inflammation of pharyngeal bursa causing Tornwaldt cyst. This is caused by spontaneous drainage in the nasopharyngeal cavity or because of involvement of nervous plexus.
What is a Thornwaldt Bursa?
Thornwaldt’s bursa, also known as nasopharyngeal bursa, is a recess in the midline of the nasopharynx, which is produced by persistent notochord remnants. If the opening of the bursa is occluded, benign midline nasopharyngeal mucosal cyst called Thornwaldt cyst develops. Thornwaldt cysts are almost always asymptomatic.
How is Tarlov cyst diagnosed?
Abstract. Tarlov cysts are most commonly diagnosed by lumbosacral magnetic resonance imaging and can often be demonstrated by computerized tomography myelography to communicate with the spinal subarachnoid space. The cyst can enlarge via a net inflow of cerebrospinal fluid, eventually causing symptoms by distorting, compressing,…
What is the main cause of ovarian cysts?
The cause of ovarian cysts is related to the type of cyst. There are three types of ovarian cysts and these include: Functional cysts are the most common. They are related to variations in the normal functioning of the ovaries – they will form when an egg tries to release as it should during normal ovulation.
What is a dorsal cyst?
The dorsal cyst of holoprosencephaly is a large cerebrospinal fluid cavity present in holoprosencephaly that occupies the area above the dorsocaudal aspect of the diencephalon. This communicates directly with the prosencephalic, telencephalic, or diencephalic ventricle.
What is a cyst in the bladder?
Cysts are pockets of tissue filled with air, pus, or other types of fluid. They may appear anywhere on the body, internally or externally. Bladder cysts tend to form in the lining of the bladder. They are relatively rare in people who have a normally functioning urinary tract.
