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tip of catheter or the burst balloon of a Foley catheter, hair, wire or thread suture
following closure of a suprapubic fistula, may be contributory factors. Moreover, small
renal stones transferred through the ureter into the bladder or posterior urethra can
grow considerably in size through phosphatic sediment if not removed in time. In my
monograph (1953), the X-rays of a case of traumatic paraplegia below Tn/i2 with
suprapubic drainage were described showing two stones in the bladder and one in the
posterior urethra. A urethrogram following the removal of the stones demonstrated a
FIG. 173.
