Treatment of ureteral stones with LithoEVO device and Vapor Tunnel tool.

BACKGROUND: Vapor Tunnel (VT) technology is the result of a pulse modulation during holmium laser emission which reduces stone retropulsion. We present the outcomes of this tool in the treatment of ureteral stones. METHODS: Two hundred ten patients with a ureteral stone were randomly assigned to holmium laser lithotripsy with (group A) or without (group B) the VT technology. The 35 W LithoEVO laser generator (Quanta System, Samarate, Varese, Italy) was used. We compared operative time, dusting time, delivered energy, retreatment rate due to stone push-up, ureteral lesions, and stone-free rate (SFR) and postoperative strictures at 1 month. We also compared outcomes according to stone position. RESULTS: VT technology was associated with significantly lower mean operative time (25.7 vs. 37.2 min), dusting time (9.7 vs. 15.3 min), delivered energy (7.7 vs. 19.9 KJ). In group B 9 patients (8.5%) were retreated due to stone push-up (P=0.01) for a proximal or middle stone, 6 (5.7%) postoperative strictures occurred (P=0.03) and a higher ureteral lesion rate was observed (7.6% vs 35.2%, P=0.04). 1-month SFR was comparable (93.4% vs. 88.6%, P=0.11). Postoperative complication rate was higher in group B (P=0.05). Without VT technology, ureteral lesions and strictures rates were significantly higher independently from stone position. CONCLUSIONS: The VT technology is associated with significantly lower operative and dusting time independently from stone position, due to a reduced retropulsion, which makes treatment quicker and easier. It also avoids stone push-up especially for proximal and middle stones and reduces ureteral lesions, postoperative complications, and ureteral strictures.

Robotic nephropexy in case of symptomatic nephroptosis.

We found only a recent report of robotic-assisted nephropexy, in a young female with associated dismembered pyeloplasty. Herein we present the first case of isolated robotic nephropexy. A 34-year old female was referred to our Urological Division history of right flank pain and evidence at intravenous urography of a 5-6 cm descent of right kidney moving from supine to erect position. The robotic nephropexy was performed with a transperitoneal approach and 4 trocars. The kidney was wrapped up with a Parietex Composite (PCO) mesh (Tyco Healthcare), previously precut in an hockey stick shape to obtain a "spoon effect" to push up the lower pole of kidney. Despite the laparoscopic or retroperitoneoscopic procedures, the robotic-assisted nephropexy appears easier, with the particular advantages of the intracorporeal suturing and a better intraoperative view. The use of mesh, in our opinion, is preferable respect the decapsulation of the kidney, to avoid unnecessary blood loss and possible scarring.

[Urethro-autoplasty: scrotal in-lay, mesh-graft, buccal on-lay]. / Uretro-autoplastiche: in-lay scrotale, mesh-graft, on-lay buccale.

The surgical therapy of the urethral strictures is still controversial as it interests the choice of an appropriate technique among many methods. In cases of complex urethral strictures, urethroplasties using genital or extragenital tissue for reconstruction are indicated. Scrotal in-lay was popular some years ago, but the complications rate was high. Nowdays, the two techniques with better outcome are the mesh graft urethroplasty and the buccal mucosa on-lay urethroplasty.