In medicine, a Phrygian cap is the folded portion of some gallbladders that resembles the Phrygian cap. 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.

What is a Phrygian cap of the gallbladder?

A Phrygian cap is a congenital anomaly of the gallbladder with an incidence of 4%. It can simulate a mass in the liver during hepatobiliary imaging and is sometimes mistaken for pathology. A Phrygian cap, however, has no pathological significance and normally causes no symptoms.

What was the Phrygian cap used for?

Red Phrygian or 'liberty' caps were long associated with the theme of liberty in European and colonial cultures. They were used as icons during the American Revolution and worn during the French Revolution in the late 1700s and came to symbolise allegiance to the republican cause.