PMC6334587_01
(a) Coronal section of magnetic resonance imaging showing the giant bladder tumor occupying the bladder cavity. (b) Carbon dioxide insufflation of the bladder provided a clear cystoscopic view despite severe bleeding during transurethral resection
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F1
Magnetic resonance imaging of the urinary bladder showed a giant pedunculated tumor (67 mm x 37 mm x 58 mm) on the anterior wall, with multiple daughter tumors up to 15 mm in size [Figure 1a], but all appeared to be non-muscle invasive. Thus, we decided to insufflate the bladder with CO2 to achieve a clear cystoscopic view [Figure 1b].