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A 40-year-old man presented with chronic renal failure for follow-up on differential renal function.
15 mCi of 99mTc DTPA were injected and flow phase, perfusion and excretion phases were obtained and examined. There was delayed radiotracer excretion in keeping with reduced glomerular filtration rate. The delayed images demonstrated enlarged, distorted renal collecting systems bilaterally (tracer accumulation wthin peripelvic cysts) (fig 1). Selected axial CT image through the abdomen was also available for anatomic correlation and demonstrated severe enlargement of both kidneys due to multiple cysts (fig 2).
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2. Klopper JF, Hauser W, Atkins HL, et al. Evaluation of 99mTc-DTPA for the measurement of glomerular filtration rate. J Nucl Med 1972; 13: 107–10.
3. Babu R, Basarge N, Ahlawat R, et al. Prediction of functional outcome in poorly functioning kidneys with unilateral pelviureteric junction obstruction: analysis of clinical features and lsotope renography. Indian J Urol 1996; 12: 65–70.
Competing interests: None.
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