This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney & Ureturs, Subject name: Surgery
A child presents with complaints of abdominal colic and hematuria USG showed a renal stone 2.5 cm in diameter in renal pelvis the next step in management of this case: 
Select and explain. 
A. ESWL, B. Pyelolithotomy, C. Nephroureterostomy, D. Conservative
A: ESWL
Answer: A: ESWL 
Explanation: Ans. (a) ESWLRef: Campbell 10th Edition, Pages1302-1309* The best option is PCNL followed by ESWL for this stone of size 2.5cmStone Size and Treatment:# Stone <2cm- ESWL# Stone >2cm - PCNL# Staghorn stone - PCNL + ESWL