QuestionSBA
QuestionChoice
A renal stone in the bladder is unlikely to cause obstruction, as to reach the bladder the stone must be small enough to pass through the strictures of the ureter.
10026044
e
Bladder
QuestionChoice
This is correct. The pelviureteric junction (PUJ) is the narrowest part of the ureter, and therefore is the most likely place for a renal stone to obstruct.
10026040
a
Pelviureteric junction (PUJ)
QuestionChoice
A renal stone in the urethra is unlikely to cause obstruction, as to reach the urethra the stone must be small enough to pass through the strictures of the ureter.
10026043
d
Urethra
QuestionChoice
This is incorrect. Renal stones are most likely to be found obstructing the pelviureteric junction (PUJ) as this is the narrowest part of the ureter. The vesicoureteric Junction (VUJ), and the point at which the ureter crosses the pelvic brim, are also common sites of stone obstruction.
10026041
b
Distal third of the ureter
QuestionChoice
This is incorrect. The vas deferens is a tubular structure in the male reproductive system that transports sperm cells from the epididymis. It is not directly connected to the ureters and would not contain a renal stone.
10026042
c
Vas deferens
Concept
Chapter
2693
4413
Renal Stones
Topic
142
Nephrology
17606
A 43 year old woman presents to the Emergency Department with sudden onset loin to groin pain. She describes this as a 10/10 severity and has just started vomiting. A CT scan of the renal tract reveals an obstructing stone.

Which of the following is the most likely place for a renal stone to cause obstruction?
a