Defects in the Urographic Contrast Medium above and below a Ureteric Calculus

Camiel M. R. : Stone in the intramural bladder portion of the ureter. Urographic observations. Radiology 78 (1962), 959.

Edling N. P. G. : Further studies of the interureteric ridge of the bladder. Acta radiol. 30 (1948), 69.

Emmett J. L. : Clinical urography. An atlas and textbook of roentgenologic diagnosis. W. B. Saunders Co, Philadelphia and London 1964.

Holmlund D. : Ureteral stones. An experimental and clinical study of the mechanism of the passage and arrest of ureteral stones. Scand. J. Urol. Nephrol. 1968, Suppl. No. 1.

Kiil F. : Function of the ureter and renal pelvis. W. B. Saunders Co, Philadelphia and London 1957.

Wisoff C. P. Parsavand R. : Edema of the interureteric ridge: A useful roentgen sign. Amer. J. Roentgenol. 86 (1961), 1123.