Laguna, MP; Gimeno, A; Guinda, C; Borrego, J; Zazo, A; Vicente, J

Review of the literature concerning the use of Double J stents prior to extracorporeal shock wave lithotripsy. The advantages and disadvantages of stenting are described together with the marked benefit derived from the pretreatment use of the stent. The authors also try to determine which stones are suitable for preliminary stenting, by noting the degree of stone mass.