[Renal lithiasis, can we predict the need for retreatment in retrograde intrarenal surgery (RIRS)?].

Objectives: To analyze the predictive factors for retreatment in RIRS to achieve complete lithiasis resolution.

Methods: Retrospective comparative study analyzing 298 cases of RIRS performed in our center over a 3 year period. The cohort was divided in two groups: Resolution in one operation or more than one, evaluating homogeneicity for age and gender.

[Current results of RIRS and comparison with PCNL.].

Objectives: The objective of this article is to show the current situation regarding two surgical techniques for the treatment of renal lithiasis, RIRS (Retrograde intrarenal surgery) and PCNL (Percutaneous nephrolithotomy), specially concerning the larger size stones. We perform a literature review on the topic and add the experience with both techniques at our center. Besides, we also analyze the role of RIRS in comparison with the percutaneous techniques in smaller size lithiasis.

[Renal hemorrhage after ESWL: From small hematoma to renal blowout].

Objective: To report two cases of renal hemorrhage after extracorporeal shock wave lithotripsy (ESWL) and their therapeutic management.

Methods: Description of the clinical cases, together with the diagnosis and therapeutic management of these complications.

Results: We present two cases of patients with renal hemorrhage after ESWL, which were performed without immediate complications.