Figure 5: Cavernosography in a 49-year-old man one year postoperative. A. An AP view showed scare drainage vein despite injection of 10mL solution. B. Similarly in this oblique view, no residual vein was demonstrated. C. Further oblique view disclosed minima drainage vein despite rigid erection occurred when 35mL solution was injected. D. An AP view cavernosogram disclosed a marked vein (arrows). It could be the offensive vein resulting in insufficient surgery.