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Is spiral computed tomography the imaging modality of choice for renal colic?
  1. N Sarath Krishna,
  2. L Morrison,
  3. C Campbell
  1. Department of Urology and Radiology, Southern General Hospital, 1345 Govan Road, Glasgow G51 4TF, UK
  1. Mr Sarath Krishna Nalagatla

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Answers on p 132.

A 59 year old women was admitted with left loin pain of three days' duration. There was no radiation of pain to her groin. She had no dysuria, urinary frequency, or vaginal discharge and was apyrexial. On examination she had no loin tenderness. She was treated with analgesics, which relieved her pain. Her urine analysis was positive for blood. A midstream specimen of urine showed no growth of organisms. Full blood count, electrolytes, urea, and creatinine were all within normal limits. Intravenous urography was performed which revealed no obvious calculus in the line of the urinary tract and a normal right kidney. A delayed dense nephrogram was seen on the left side. There was no contrast excretion into the left ureter. Subsequently spiral computed tomography of the abdomen was performed to exclude a calculus as the cause of the obstruction (see fig 1).

Figure 1

Computed tomogram of patient.

Questions

(1)
What is the diagnosis, and what is spiral computed tomography?
(2)
What are the findings on the spiral computed tomogram?
(3)
What are the advantages of spiral computed tomography in evaluating a case of renal colic?

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