Relationship Between Duration of Pain and Secondary Signs of Obstruction of the Urinary Tract on Unenhanced Helical CT
Michael J. Varanelli1,
Deirdre M. Coll2,
Jonathan A. Levine3,
Arthur T. Rosenfield1 and
Robert C. Smith2
1
Department of Diagnostic Radiology, Yale University School of Medicine, 333
Cedar St., New Haven, CT 06510.
2
Department of Radiology, Cornell University Medical College, Box 141, New York
Presbyterian Hospital, 525 E. 68th St., New York, NY 10021.
3
Department of Radiology, Rush-Presbyterian Medical Center, 1650 W. Harrison
St., Chicago, IL 60612.

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Fig. 1. Unenhanced CT image of 45-year-old woman with right-sided
flank pain and mild perinephric stranding on right side.
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Fig. 2. Unenhanced CT image of 60-year-old man with left-sided flank
pain and moderate perinephric stranding on left side.
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Fig. 3. Unenhanced CT image of 53-year-old woman with left-sided
flank pain and severe perinephric stranding on left side at inferior pole of
left kidney.
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Fig. 4. Line graph shows frequency of moderate or severe perinephric
stranding as function of duration of pain.
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Fig. 5. Line graph shows frequency of ureteral dilatation as function
of duration of pain.
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Fig. 6. Line graph shows frequency of moderate or severe perinephric
fluid as function of duration of pain.
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Fig. 7. Line graph shows frequency of collecting system dilatation as
function of duration of pain.
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Fig. 8. Line graph shows frequency of periureteral stranding as
function of duration of pain.
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Fig. 9. Line graph shows frequency of nephromegaly as function of
duration of pain.
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Fig. 10. Line graph shows frequency of ureteral rim sign as function
of duration of pain.
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Fig. 11. Line graph shows frequency of stones having size of 1-4 mm as
function of duration of pain.
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Fig. 12. Line graph shows frequency of stones in distal ureter, at
ureterovesical junction, or in bladder as function of duration of pain.
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Copyright © 2001 by the American Roentgen Ray Society.