The<unk> results from folding of the gallbladder fundus. In medicine, a<unk> is the folded portion of some gallbladders that resembles the<unk> (a soft conical cap with the top pulled forward, associated in antiquity with the inhabitants of<unk>  a region of central Anatolia). It is a normal anatomical variant seen in 1-6% of patients. It is caused by a fold in the gallbladder where the gallbladder fundus joins the gallbladder body. Apart from the chance of being mistaken for stones on a sonogram, it has no other medical implications nor does it predispose one to other diseases. However, due to potential decrease in bile flow, it may warrant a preventive removal of the gallbladder. File:Phrygian-cap-CT-001 edited-copy.CT scan showing a<unk>
Phrygian cap 
Cradle cap
Munk's Roll
Tycoon's cap
Dennie–Morgan fold
Pinard horn
Terminal web
Pocock boundary