<prompt> A Child presents with complaints of abdominal colic and hematuria USG showed a renal stone 2.5cm in diameter in renal pelvis the next step in management of this case ?ESWLPCNLNephroureterostomyConservative  <response>: Ans is b i.e. PCNL Also know Steinstrasse - literally means stone street - it is condition which follows the use of ESWL. - small pieces of fragmented calculi collect and obstruct in the distal ureter, like sand occluding a straw. 