The septate gallbladder probably represents a congenital anomaly of form, that can be proven by X-ray in 3,8% of hospitalized patients. Only in 25% of these cases it has an own symptomatic significance. Here it does lead though, more or less distinctly, to the typical painful discomfort, comparable to the cholelithiasis, especially augmented by dietary sins, up to the state of colics. The symptoms intensify during the clinical course. Because the gallbladder remains in most cases without the finding of concrements, the misjudgement in these cases often leads to an unnecessary prolongation of the interval between diagnosis and operative treatment.