![]() The successive and repetitive nature of renal colic virtually assures these patients (especially younger ones) a higher iatrogenic cancer risk and, thus, forms a logical argument for judicious use of CT in this population. Ultrasound findings of calciphylaxis have been rarely reported, but given. 38 The widespread use of CT has raised concerns within the imaging community because of the large cumulative radiation dosage being delivered to patients. A 67-year-old woman with end-stage kidney disease on peritoneal dialysis, with. Another study showed that in patients who had resolution of pain with analgesics, immediate imaging by CT in the ED did not lead to reduced morbidity when compared to imaging by CT 2–3 weeks later. 37 However, there was no corresponding increase in the proportion of renal stone diagnoses or hospital admissions. ![]() A retrospective analysis of ED visits from 1996 to 2007 found a 10-fold increase in the use of CT in patients with suspected renal stone disease. A kidney ultrasound is a non-invasive way to take images of your right and left kidneys. Many physicians are now using CT in place of both ultrasound and IVP because it allows visualization of the urinary tract as well as extraurinary structures such as the appendix and aorta. 1 In chronic renal infections and stone disease, the ultrasound shows findings referable to the disease process such as abscesses, calculi and. 36 However, CT remains less accessible, involves a considerable exposure to radiation, and does not need to be performed emergently in stable patients with uncomplicated clinical presentations. Ultrasound is often the first imaging modality used in evaluating the kidneys, especially in patients with decreased renal function, because it is inexpensive, quick, safe, and easily accessible. 27 – 35 CT provides excellent visualization of the urinary tract and renal stones, and has a higher sensitivity for renal calculi compared with ultrasound. The left kidney is fused to the lower pole of the right kidney. This may result in a single large fused kidney as shown below (crossed-fused-ectopia) Ultrasound of a cross fused ectopic kidney. The sensitivity of CT scan in the detection of renal stone disease varies from 86% to 100%. Less commonly, a kidney may ascend to the other side with 2 kidneys on one side of the abdomen.
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