Extrarenal Stone Migration After PNL and RIRS: Effectiveness of Conservative Follow-up in Light of Literature

This study aims to evaluate rare cases of extrarenal stone migration after endoscopic stone surgery in light of the literature. Complications such as stone migration can rarely be seen after flexible ureterorenoscopy (RIRS) and percutaneous nephrolithotomy (PNL), which are widely used in the treatment of urolithiasis. In this case report, extrarenal stone migration was detected in a 43-year-old man who had previously undergone PNL and RIRS, but since the patient was asymptomatic, conservative follow-up was applied instead of surgical intervention. In the patient's CT scans, it was seen that the stone was lateral to the psoas major muscle and did not cause significant inflammation or edema in the surrounding tissues. When the cases in the literature were examined, extrarenal stone migration is usually associated with symptoms such as pain, infection or loss of renal function and requires surgery, but in this case, surgery was not applied due to the asymptomatic course. This situation shows the importance of conservative approaches and that they can be an alternative to surgery. In conclusion, the increase in such cases reported in the literature may guide the management of extrarenal stone complications. This study emphasizes conservative treatment strategies, especially in patients with asymptomatic extrarenal stone migration.