FIGURE 1. (A)Intravenous pyelogram showing dilatation of pelvis and upper ureter on right. (B) lb-eteral catheter in position showing marked medial deviation of right ureter. (C) Venacavogram with retrogrades ureteropyelogram showing retrocaval ureter at level L3 -L4.
An eighteen-year-old female patient complained of persistent pain in the right costovertebral angle and frequency of urination and dysuria. Intravenous pyelogram revealed right hydronephrosis and upper ureteral dilatation (Fig. 1A). Retrograde pyelogram revealed marked medial deviation ofright ureter at level L3-L4 (Fig. 1B). Venacavogram and retrograde pyelogram demonstrated the retrocaval position of the right ureter at the level of obstruction (Fig. 1C).
1975 / VOLUME
VI, NUMBER 3
Retrocaval ureter is a congenital abnormality resulting from persistence of the subcardinal vein and gives rise to various degrees of obstructive uropathy. The major radiographic features are the marked medial deviation of the ureter. Usually ureterogram in conjunction with venacavogram can establish diagnosis. K. Gopinatha Rao, B.Sc., M.S. Brandon Clinic Brandon, Manitoba, Canada