Table 1.  Findings in 100 adult men with proved urinary tract infection, according to method of investigation Ultrasonography and x ray Intravenous urography Upper tract:   Hydronephrosis 8 7   Kidney stone 3 3   Ureteric stone 2 2   Small/scarred kidney 4 3   Pelvic kidney 1 1   Ureteric dilatation 0 3 Lower tract:   Residual urine 34 26   Diverticulum 6 7   Bladder stone 1 1