A 56-year-old man presents with sudden severe left loin-to-groin pain and visible haematuria. CT KUB shows a 4 mm distal ureteric stone and no signs of obstruction or infection. He is otherwise well. What is the most appropriate management?AUrgent nephrostomyBImmediate open surgeryCConservative management with NSAIDs and oral fluids plus safety-net adviceDLong-term antibioticsENo analgesia neededCheck my answer