Hey guys,
Remember how we were discussing the branchial cysts the other day, and I'll had was that branchial mean gills?
Well now I'm 90% sure that the branchial cysts are the cysts Galani mentioned in this lecture which results from a persistent 2nd,3rd,and 4th ectodermal groove.
They not only show up in the same place, and in fish those grooves become the gills, but then I found this website:
http://emedicine.medscape.com/article/382803-overview
Anyways, feel free to debate if you think you figured out something else, but I'm gonna go with it and just wanted to let you all know.
Best,
Bry