Efficacy of ESWL for Renal Calculus less than 2 cm in size - A single centre experience

Abstract

Purpose: The purpose of this retrospective study was to analyze the outcome of ESWL for treatment of renal stone less than 2 cm and to compare the stone free rate and success rate among different stone size groups i.e. less than 10mm, 10 to 15mm and 16 to 20 mm. Materials and Methods: This was a retrospective hospital record based study. The study population included patients who underwent SWL for a non- obstructive solitary renal calculus < 2 cm without any complications. Patients were divided into three groups according to the size of the calculus. All the patients underwent ESWL as per the departmental protocol. Results: Mean number of sessions performed was (mean – 1.58, SD +/-1.007) sessions per lithiasis. The success rates for ESWL in solitary renal calculus with size less than 2cm in Upper calyx, Middle calyx, Lower calyx and Renal pelvis were respectively 100%, 97%, 94% and 98%. Overall success rate for solitary renal stone size less than 20 mm was 97%. Conclusion: ESWL is a safe, non invasive method to treat solitary renal calculus less than 20 mm. Patients with stone size larger than 1.5 cm needs to be discussed for multisession treatment and possible outcome of lower success rate if they are opting for ESWL.