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a Urethral tumour mimics: urethral bulking agents. Axial T2-weighted image demonstrates recently injected peri-urethral collagen suspension to be relatively hyperintense. b Urethral tumour mimics: urethral bulking agents. With T1-weighted image after intravenous gadolinium-based contrast administration, recently injected peri-urethral collagen suspension lacks enhancement (arrows)
