[Anatomic variability and congenital anomalies of the gallbladder: ultrasonographic study of 1823 patients].

The authors report the results from the ultrasonographic exploration of the gallbladder performed on 1823 patients. They found morphologic variations and abnormalities in more than 33% of gallbladders, topographic ones in about 3.5% of observations and only 3 cases of real duplication of the gallbladder. Folds and septa may induce traps during echographic examination.