Retrograde Intrarenal Surgery Versus Extracorporeal Shockwave Lithotripsy

Inclusion Criteria * Those patients will be included with lower calyceal renal stones and size up to 1.5 cm. * Patients' ages will be between 18 and 60 years. * Both genders will be included. Exclusion Criteria: * Untreated Urine culture positive will be excluded * Patients using anticoagulants and females with pregnancies and those lactating will be excluded. * Anatomical abnormalities like horseshoe kidney, duplex system, pelvic kidney, malrotated kidney, calyceal diverticulum, steep infundibulopelvic angle, infundibular stenosis, long infundibular length/narrow infundibular width, pelvic ureteric junction obstruction, ureterocele, and ureteral stricture will be excluded.