—Rathbun and Wehrbein28 state that lymphosarcomatous tumor of the urinary bladder is rare; data on only 5 cases have been reported previously. The case they reported was of a woman, 64 years of age, who gave a history of recurrent cystitis. Cystoscopy revealed two round tumors in the right side of the base of the bladder and two small ones on the left lateral wall. The bladder was opened, and the tumors were excised with fulgurating current. The histologic diagnosis was lymphosarcoma of the bladder.
—Zellermayer and Carlson29 state that true congenital hourglass bladder is a definite entity and is caused by some regular malformation in the development of the embryo. The bladder is divided into two portions, one above the other, so that it has the shape of an hourglass. In some instances the ureters open into the upper segment and in other