<prompt> Not true about PUJ obstruction is:Retrograde pyelography is useful to locate the site of obstructionEndoscopic pyelotomy is contraindicatedWhittaker test is of clinical significanceDismembered pyeloplasty is the procedure of choice  <response>: Ans. b Endoscopic pyelotomy is contraindicatedPUJ obstruction Salient points:Most common cause of fetal hydronephrosisMost common in boys, most common in left sideBilateral in 10-15IOC is DTPA scanAnderson Hynes Pyeloplasty is the Gold standard treatmentEndoscopic treatment is endoscopic pyelotomy 