The purposes of ureter-catheterism in connection with the cystoscope are twofold: For diagnosis and for treatment.
To locate the origin of pus, blood, tubercular products or bacilli, the various pyogenic infections, abnormally desquamated epithelium, etc., as to whether they come from (a) the bladder, (b) the right ureter, (c) the left ureter, (d) the right kidney (e) the left kidney, (f) the right or (g) the left peri-renal space and communicating with the corresponding kidney or ureter.
To recognize and locate obstructive conditions in the right or left ureter, from (a) stricture, (b) stone, (c) adjacent tumors, (d) bend or kink in the ureter from movable or dislocated kidney, (e) valvular junction of ureter and pelvis.
To determine (a) the presence of two kidneys, (b) if only one, which is absent.
To determine the number of ureters present.
To determine the functional activity of each kidney separately and relatively,