The traditional teaching that testicular torsion occurs primarily in the medial direction is misleading since in a third of cases it occurs in the lateral direction. While manual detorsion should be guided by response and return of normal anatomy, surgical exploration remains necessary since residual torsion still poses a risk to testicular viability. Long-term followup is warranted to assess the true incidence of subsequent atrophy after the management of acute testicular torsion.

When stent insertion following ureteroscopy is deemed necessary, a minimum diameter of 6F is recommended.

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Testicular torsion is a urologic emergency. The ability of color and power Doppler sonography to diagnose partial testicular torsion definitively remains uncertain. We present a case in which color Doppler findings were indeterminate and the diagnosis of partial testicular torsion was made on the basis of spectral waveform analysis. The characteristic findings in the spectral waveform were asymmetry between the 2 testes, with a higher intratesticular resistance index on the affected side, and reversal of the diastolic plateau on the affected side. © 2001 John Wiley & Sons, Inc. J Clin Ultrasound 29:105–108, 2001.