Fig. 6From: Endocavitary contrast enhanced ultrasound (CEUS): a novel problem solving technique(A) Ultrasound contrast administered via an in-dwelling urinary catheter shows an anterior filling defect seen at cystoscopy to be a villous adenoma within a urachal remnant (thin arrow) with simultaneous greyscale imaging. (B) Optimised CEUS imaging demonstrates the extra vesical element of the filling defect (thick arrow)Back to article page