Ja. Mokulis et Sj. Peretsman, RETROGRADE PERCUTANEOUS NEPHROLITHOTOMY USING THE LAWSON TECHNIQUE FOR MANAGEMENT OF COMPLEX NEPHROLITHIASIS, Journal of endourology, 11(2), 1997, pp. 125-130
Percutaneous nephrolithotomy remains an important technique for managi
ng complicated nephrolithiasis. Retrograde percutaneous nephrostomy cr
eation has been promoted as an alternative to the standard antegrade t
echnique, We reviewed our first 41 consecutive attempts utilizing the
Lawson technique for managing patients with complicated nephrolithiasi
s. Percutaneous access was achieved in 40 attempts (98%), Thirty-six (
90%) of the retrograde nephrostomy tracts were adequate for lithotrips
y or stone extraction during the same anesthetic, Twenty-three (56%) o
f the kidneys treated with the Lawson procedure were rendered stone fr
ee, Nine patients had minimal residual stone burden (fewer than five f
ragments, 4 mm or smaller) by the time of discharge, A single Lawson p
rocedure rendered 10 kidneys (24%) stone free, An additional 20 clinic
procedures and 17 anesthetic procedures were performed on the 40 kidn
eys, Complications were minimal, with three patients (8%) requiring tr
ansfusion.