ROENTGEN DIAGNOSIS OF DYSURIA

BALOON TRACTION METHOD OF BLADDER NECK ROENTGENOGRAPHY

Abstract

1. Measurement of the diameter of the vesical neck and posterior urethra, at the portion of verumontanum in voiding cystourethrography was made for the differential diagnosis of dysuria. The results are as follows;
2. The author devised a new roentgenological method to show the shape of the bladder neck.
A soft baloon tied to the tip of an urethral catheter was inserted into the bladder. The baloon was filled with 20ml of contrast medium, and the end of urethral catheter was tracted by a 250g weight.
The author divides the form of the baloon at the portion of the vesical neck into two types.
Type I; the curve of the baloon at the bladder neck is inward convex.
This type is subdivided into I-a and I-b according to the degree of convexity.
Type II; the curve is outward convex.
In a group of 15 cases without dysuria 9 cases belonged to type II and the other 6 cases to type I-b. However, in the 22 cases with dysuria, 21 cases belonged to type I and 14 of them belonged to type I-a.
We think that the roentgenollogical finding of the bladder neck by this method may be as useful for judging the condition of the bladder neck as the test of finger-insertion into the posterior urethra during suprapubic operation.
Though our experience is still limited, this new method is useful in differential diagnosis and an indication for operation of bladder neck obstruction.