<prompt> Reflux into grossly dilated ureter belongs to which grade of Vericoureteric Reflux ?Grade IIGrade IIIGrade IVGrade V  <response>: Grading of VUR based on radiocontrast MCO :GradeDescriptionIReflux into non - dilated distal ureterIIReflux into upper collecting system in non dilated ureterIIIReflux into dilated ureterIVReflux into grossly dilated ureterVmassive Reflux with ureteral dilation , tortuous effaced calyces 