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Fig. 6 —70-year-old man with painless hematuria. Axial image from CT urography shows pedunculated mass (white arrow) with narrow, stalklike attachment (open arrow) arising from bladder trigone near left ureteral orifice. Transurethral resection revealed high-grade papillary transitional cell carcinoma. Small filling defect (black arrow) medial to right ureteral orifice represents normal interureteric ridge and should not be mistaken for tumor. Although bladder tumors can be seen with CT urography, its sensitivity remains low and it should not be substituted for cystoscopy.