A duplex collecting system also known as duplicated collecting system in some literatures, is one of the most common congenital renal tract abnormalities to be found incidentally during evaluation of the person for some other complaints. It shows an incomplete fusion of upper and lower pole moieties which may cause a variety of complete or incomplete duplication defects of urinary collecting system [1] . While considered an anatomical variant we need to keep in mind that these duplex collecting systems may be associated with various complications like vesicoureteric reflux, obstruction or ureterocele. In this study, we are going to discuss a case of a young boy who presented with urinary difficulty, on haematological evaluation it showed renal infection. On further radiological evaluation, patient was found to have duplication collection system.