Wednesday, December 17, 2008

Embryology Review

An adolescent presents with the finding shown above. A reconstructed CT is shown below.

Challenge: What do you think it is?

Both images shown under fair use.


Stephanie said...

thyroglossal duct cyst

Alex said...

think midline is thyroid remnant in thyroglossal duct.. on the side would be a branchial cleft remnant

Craig Chen said...

Embryology Review

Thyroglossal duct cysts are epithelial remnants of the thyroglossal tract and present as a midline neck mass at the level of the thyrohyoid membrane. The thyroid gland forms at the foramen cecum of the tongue and descends from the 4th to 10th week of gestation. The CT shows a midline cystic lesion with a slightly enhancing wall.

Sources: UpToDate;;