"adder head" appearance on excretory urography is seen in
(Ureterocele) (1310-LB) (1290-B & L 25th)Ureterocele is a cystic enlargement of the intramural portion of the ureter thought to result from congenital atresia of the ureteric orifice.* The "adder-head' on excretory urography is typical* Usually the cyst wall is composed of urothelium only and the diagnosis is confirmed by the cystoscopic appearance of a translucent cyst enlarging and collapsing as urine flows in from the upper ureter.
Hydronephrosis
Infantile polycystic kidney
Ureterocele
Horseshoe kidney
Kidney & Ureturs