“…Nevertheless, some patients still have poor compliance and forget to return for removal (sometimes for more than 10 years). In the long term, severe complications might ensue, including stent encrustation (2-6), novel calculus formation (2, 3, 5, 7), stent migration (18), stent fragmentation (6,19,20), hydronephrosis (2,9,21), or urosepsis (10). A literature search revealed that stent encrustation and urinary stone formation are the most common long-term complications.…”