Abstract A case of diverticulum in the bladder in the female is reported. This diverticulum was found to be made up of all the true bladder layers and must therefore have been a congenital anomaly. A modified technique for the removal of diverticulum is presented. The method used here and suggested by Young is applicable only to such diverticula as are of good size, with thick wall and a distinct narrow neck, where there is no other reason for opening the bladder. Under such conditions it is technically less difficult, traumatizes the bladder less and should give a shorter convalescence than the more frequently described extra- or intravesical methods of excision.