From its humble beginnings as a method of expediently decompressing th
e obstructed kidney, the field of interventional uroradiology has evol
ved in the hands of urologists and interventional radiologists to a me
ans of addressing myriad problems in the urinary tract and has changed
the day-to-day practice of urology. The foundation of interventional
uroradiology is the creation of an appropriate entry into the urinary
system. After a review of this basic procedure, extensions of the tech
nique and new applications of emerging technology are reviewed.