<prompt> Locate the renal stone with pain radiating to medial side of thigh and perineum due to slipping of stone in malesAt pelvic brimIntramural opening of ureterJunction of ureter and renal pelvisAt crossing of gonadal vessels and ureter  <response>: The clinician is able to judge the position of the stone by the history of pain - Ref : S. Das manual, 4e p408 