<prompt> Treatment of symptomatic retained GB stone is?SphincterotomyESWLLaproscopic removalNone of these  <response>: .Gall stones should be dealt by laparoscopic cholecystectomy in 2 weeks after acute attack. Endoscopic sphincterotomy ERCP and often stenting may be needed if there are CBD stones. ERCP--Therapeutic, i.e. Endoscopic papillotomy sphincterotomy and stone extraction through Dormia basket or balloon catheter; or fragmenting the stone and extraction; or removal through baby endoscope. CBD stent is placed in situ.Once CBD stones are extracted through ERCP, laparoscopic cholecystectomy is done. ref : SRB;s manual of surgery,3 rd ed,pg no 584 