PD07-09: Treatment of isolated small renal stones leads to resolution of symptoms and should be routinely offered to patients: Prospective outcomes from a university hospital

Matthew Schembri, Amelia Pietropaolo, Bhaskar Somani

Introduction: Treatment of small renal stones and the symptomatic value it offers to patients is often debated. Our aim was to analyse prospective surgical outcomes for treatment of small renal stones and whether it leads to symptom resolution.

Methods: Over a period of 8 years (March 2012-June 2019), consecutive patients with isolated symptomatic small renal stones were identified from the prospective database. Patients were further subdivided into two groups (group 1: =7mm and group 2: 8-10mm). Data was collected for patient and stone demographics, surgical outcomes and symptom resolution.

Results: A total of 109 patients with a mean age of 50 years (range: 2-91 years) and a male:female ratio of 1:1.2 underwent ureteroscopy (URS) and stone treatment. The stone location is as shown in the table. The mean operative time (33 min vs 56 min) was significantly higher for group 2. The day case rate for groups 1 and 2 was 77.8% and 56.8% respectively. The stone free rate (SFR) was 97% and 83.7% for the 2 groups and there were 3 Clavien I/II complications noted.

Patients across the groups had pain (n=68), urinary tract infections (UTIs) (n=28) and haematuria (n=13). The symptom resolution for groups 1 and 2 were 92% and 94.4% for pain, 82.4% and 90.9% for urinary tract infections and 100% for haematuria across both the groups.

Conclusions: Based on our study we would recommend that patients with symptomatic small renal stones are offered treatment for symptom resolution. Ureteroscopic treatment of isolated small renal stones is safe and leads to complete resolution of preoperative symptoms in the majority of patients. Source of

Funding: Nothing to declare.