Persistent thyroglossal duct

Persistent thyroglossal duct

Infobox_Disease
Name = PAGENAME


Caption =
DiseasesDB =
ICD10 = ICD10|Q|89|2|q|80
ICD9 = ICD9|759.2
ICDO =
OMIM =
MedlinePlus =
eMedicineSubj =
eMedicineTopic =
MeshID =
A persistent thyroglossal duct is a usually benign medical condition in which the thyroglossal duct, a structure usually only found during embryonic development, fails to atrophy. The duct persists as a midline structure connecting the back of the tongue to the thyroid gland.

Background

Early during embryonic development, the thyroglossal duct is a midline structure that connects the back of the tongue to the thyroid gland. The duct usually disappears, or atrophies, during the ninth week of gestation so that in most individuals the thyroid does not connect to the tongue. In individuals with a persistent thyroglossal duct, the duct fails to atrophy, and the connection between the thyroid gland and the tongue is maintained.

Complications

A persistent thyroglossal duct may become fluid filled, forming a thyroglossal duct cyst, the most common type of congenital neck malformation. Such cysts account for approximately 2-4% of all neck masses.

External links

*


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Thyroglossal duct — Duct not labeled, but arises nearest to region identified as pyramidal lobe ) …   Wikipedia

  • Thyroglossal cyst — DiseaseDisorder infobox Name = Thyroglossal cyst ICD10 = ICD10|Q|89|2|q|80 ICD9 = ICD9|759.2 OMIM = 188455 DiseasesDB = 13070 eMedicineSubj = ent eMedicineTopic = 283 MeshID = D013955 A thyroglossal cyst is a fibrous cyst that forms from a… …   Wikipedia

  • Congenital hypothyroidism — Classification and external resources ICD 10 E00, E03.0, E03.1 …   Wikipedia

  • Pendred syndrome — Classification and external resources OMIM 274600 DiseasesDB 9771 GeneReviews …   Wikipedia

  • Congenital hypopituitarism — Classification and external resources ICD 10 Q89.2 ICD 9 759.2 …   Wikipedia

  • List of cutaneous conditions — This is an incomplete list, which may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries. See also: Cutaneous conditions, Category:Cutaneous conditions, and ICD 10… …   Wikipedia

  • endocrine system, human — ▪ anatomy Introduction  group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… …   Universalium

  • Cyst — A closed sac or capsule, usually filled with fluid or semisolid material. * * * 1. A bladder. 2. An abnormal sac containing gas, fluid, or a semisolid material, with a membranous lining. SEE ALSO: pseudocyst. [G. kystis, bladder] adventitious c.… …   Medical dictionary

  • Ductus — A duct or walled passageway. Our word "duct" is a contraction of the Latin word "ductus" meaning "leading". The Romans, however, preferred the word "canalis" meaning "a pipe or gutter" for a… …   Medical dictionary

  • Hypohidrotic ectodermal dysplasia — Classification and external resources ICD 10 Q82.4 ICD 9 757.31 …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”