Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: 27m - Urology/Andrology Question - successful Penile vein ligation and shockwave treatment contra indication? What happens to ligated veins ?Hello to all,I have been diagnosed with severe organic erectile dysfunction and am using PDE5I, injectable PGE1 (Alprostadil) and sometimes alpha-1-antagonists (doxazosin).I am suffering from organic erectile dysfunction and had a successful dorsal vein ligation (3 years ago - superfical and deep dorsal vein as well as two ectopic veins (which helped me to get erections with medication).Even though shock wave treatment might not be very promising I still want to try it and as I happen to live in a country where it is comparatively cheap I am about to do 10 sessions in 5 weeks.But I fear that it might "unblock" the vein ligation ?Hypothethically speaking - if the ligated veins where freed from their suture would they pop open again ? Or is there scar tissue built up which will continue to block the vein ?I fear the shockwaves might damage the "suture". Since I cannot happen to find information about that online maybe someone can help me out.Thank you and best,. ### Response: The suture themselves dissolve after a while. So 3 years later the veins are closed by scar tissue. Also, when a blood vessel is surgically closed, a longer segment of the vein eventually becomes "clogged". Sounds very unlikely that anything could break them open again, even if they should deliberately try.So I don't think you should worry about this specific complication. There's probably a lot of other possible complications though, I don't know much about this specific shock wave procedure. Sounds very experimental though. Do you know how it's supposed to help for ED?.