Percutaneous treatment of stone containing calyceal diverticula: Strategies and outcomes from a University teaching hospital in a developing country

Abstract

Introduction:

There is a dearth of research available on the outcomes, complications, and recurrence rates of the modalities employed in treatment of diverticula after stone clearance by PCNL. We present our experience of various approaches employed in our institute for treatment of caliceal diverticulum after stone clearance by PCNL. We aimed to review the outcomes, complications, and recurrence rates of these procedures which can provide valuable insights into the effectiveness of these techniques in the treatment of stone containing caliceal diverticulum.

Methods:

A retrospective analysis of a prospectively maintained database of patients diagnosed with caliceal diverticular stone was conducted. The primary outcome was the stone-free rate (SFR) at the time of hospital discharge, determined by a combined nephroscopic/fluoroscopic assessment, and the obliteration of the diverticular sac. Secondary outcomes included the evaluation of operative time, duration of hospital stay and postoperative complications.

Results:

A total of 53 patients were evaluated. The mean diverticulum size was 23.2 mm, most common location was the superior calyx (30 (56.7%)). Group 1 (diverticular neck treatment + DJ stent) included 27 patients, group 2 (diverticular wall fulguration + PCN) included 18 patients and group 3 (PCN alone) included 8 patients. Mean operating time was highest in group 1 (80 min). Stone clearance was 100% in group 1, 91% in group 2 and 88% in group 3. Obliteration of caliceal diverticulum was highest in group 1 (90%). Mean duration of hospital stay was lowest in group 1 (3.2 days). Overall complications were lowest in group 2 (3/18).

Conclusion:

PCNL followed by combination of diverticular wall fulguration and PCN or treatment of diverticular neck and DJ stenting is safe and effective in causing diverticular obliteration. Placement of nephrostomy tube alone was not found to be effective in causing diverticular obliteration in our study.