... diverticula, 2 46, 260 –270anatomy and embryology of urethra, 259– 260 and associated conditions, 269 –270classifi cation, 266 fi stula diagnosis, 2 46 imaging, 264 – 266 magnetic resonance imaging, 265 – 266 positive ... urethrography and voiding cystourethrography, 264 – 265 ultrasound, 265 pathophysiology and etiology, 260 – 262 presentation, evaluation, and diagnosis, 262 – 264 prevalence, 262 surgical repair, 266 – 269 alternative ... 72electrophysiologic testing, 65 66 nerve conduction studies, 66 pudendal nerve conduction studies, 68 69 recording, 66 sacral refl ex testing, 69 stimulating, 66 urethral anal refl ex, 69 New York classifi...