QuestionSBA
QuestionChoice
Struvite stones account for roughly 5 - 10% of all cases of renal colic and are typically formed in individuals with a recent upper respiratory tract infection (specifically proteus bacteria). They form characteristic staghorn calculi.
10025680
a
Struvite
QuestionChoice
Individuals with this type of renal stone typically suffer from recurrent renal colic and urinary tract infections. Cysteine calculi are linked to a genetic defect in the reabsorption of cysteine in the kidney. They are a very rare cause of renal colic.
10025684
e
Cysteine
QuestionChoice
Whilst it is true that the majority of cases of renal stones will be composed of calcium oxalate, the presence of staghorn calculi on CT imaging make these stones more likely to be composed of struvite instead.
10025682
c
Calcium oxalate
QuestionChoice
This is a very rare form of renal stone composition. It typically occurs in patients using the anti-viral drug indinavir e.g, as part of HIV management. The presence of staghorn calculi on CT imaging makes these stones more likely to be composed of struvite instead.
10025683
d
Indinavir
QuestionChoice
These types of renal stones are typically seen in individuals with a history of gout. They account for roughly 5-10% of all renal colic cases. The presence of staghorn calculi on CT imaging makes these stones more likely to be composed of struvite instead of uric acid.
10025681
b
Uric acid
Concept
Chapter
2693
3988
Renal Stones
Topic
143
Urology
17534
A 29 year old man presents to his local emergency department in extreme pain. He is unable to sit down and is pacing around the triage unit. He describes a sharp pain in his right flank that radiates down into the right side of his groin, which has been present for the past 3 hours. He has never experienced pain like this before. A CT scan identifies staghorn calculi within the renal pelvis.

What is the composition of a staghorn renal calculi?
a