Fig. 2
a Axial contrast-enhanced computed tomography (CT) image revealing the thickened wall of the urinary bladder with stenosis of the right ureter at the vesicoureteral junction (arrow) and the dilated left ureter (circle) just before joining the bladder b Sagittal CT image showing infiltration of the wall of the urinary bladder (53 mm thick) c Coronal CT image showing bilateral hydronephrosis d Axial CT image revealing the infiltration of neurofibromatosis in the right and left gluteal regions with dermal–hypodermal invasion (triangle)