Pre-cystoscopic diagnosis of bladder tumour by modified intravenous urography

Intravenous urography is the primary radiographic procedure used to evaluate patients with haematuria. During the last 15 years a modification of intravenous urography, using delayed films of the bladder, has aided the correct pre-cystoscopic diagnosis of bladder tumor in 82 of the 95 patients seen with this condition at our medical centre. After injection of contrast medium, anteroposterior and oblique views of the abdomen are obtained up to 15 min. Our modification consists of taking delayed films of the full bladder 1/2 h and 1 h later, followed by a post-voiding film. A bladder tumour appears as a filling defect or space-occupying lesion and can be distinguished from other lesions. Such delayed films increase the yield in the radiographic diagnosis of bladder tumours.